Barbara and George H.W. Bush shared a 'perfect' exchange before her death

"Pearls of Wisdom: Little Pieces of Advice (That Go a Long Way)" is a new book that collects some of the classic wit, sage advice and enduring stories from the life of former first lady Barbara Bush.

And one story in particular is sure to bring a tear to the eye of any reader who loves a good love story — because that's just what she and former President George H.W. Bush had, all the way to the end.

50 PHOTOS
George H.W. Bush through the years
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George H.W. Bush through the years
View of US Representative to the United Nations (and future US President) George HW Bush during a press conference, New York, New York, 1971. (Photo by PhotoQuest/Getty Images)
George H. W. Bush standing in front of a 'Yale Fence' in his baseball uniform at Yale University, circa 1945-48. (George Bush Presidential Library/MCT via Getty Images)
United States Ambassador to the United Nations (and future US President) George HW Bush golfs with his wife (and future First Lady), Barbara Bush (nee Pierce), Washington DC, October 1971. (Photo by Leonard McCombe/The LIFE Picture Collection/Getty Images)
Washington, DC. December 1989 President George H.W. Bush gestures to reporters in the Rose Garden. Credit: Mark Reinstein (Photo by Mark Reinstein/Corbis via Getty Images)
George H.W. Bush, Andover Philips Academy Year Book in 1964. (Photo by Brooks Kraft LLC/Sygma via Getty Images)
View of US Representative to the United Nations (and future US President) George HW Bush during a press conference, New York, New York, 1971. (Photo by PhotoQuest/Getty Images)
George Bush was captain of championship Yale baseball team, while completing college in 2-1/2 years after war service, Phi Beta Kappa, Economics, in 1948. (George Bush Presidential Library/MCT via Getty Images)
Unspecified - 1975: George HW Bush on ABC's 'Issues and Answers' program. (Photo by ABC via Getty Images)
BEIJING, HEBEI, CHINA - 1975/05/01: Left to Right: Ted Castaneda, US 5K runner, George H.W. Bush, Chief of the U.S. Liaison Office in the People's Republic of China, speaks with Milt Richmond, journalist at the Track Stadium in Beijing, China in May 1975. The Chinese invited the US Track team to compete in 1975 in preparation for the 1976 Olympics held in Montreal. It was seen as a historic opening up of relations for communist China. (Photo by John J Boitano/Stephen J. Boitano/LightRocket via Getty Images)
GRAND RAPIDS, MI - APRIL 16: (NO U.S. TABLOID SALES) (L-R) Lady Bird Johnson, President George H.W. Bush, Barbara Bush, President Gerald R. Ford, Betty Ford, President Jimmy Carter, and Rosalyn Carter pose for a formal group portrait at the Gerald R. Ford Library re-dedication on April 16, 1997 in Grand Rapids, Michigan. (Photo by David Hume Kennerly/Getty Images)
During his campaign for the Republican Presidential nomination, American politician (and future US President) George HW Bush stands beside an open car door, Iowa, January 1980. (Photo Robert R. McElroy/Getty Images)
WASHINGTON, DC - MARCH 1981: Vice President George H.W. Bush explaining the new post of 'Crisis Manager' to the press in March 1981 in Washington, DC. (Photo by David Hume Kennerly/Getty Images)
WASHINGTON, DC -- FEBRUARY 23: President Ronald Reagan (R) walks with Vice President George H.W. Bush as the President arrive at the Vice President's residence on February 23, 1981 in Washington, DC. President Reagan and First Lady Nancy Reagan were visiting the Vice President's residence for the first time. (Photo by David Hume Kennerly/Getty Images)
Detroit, MI - 1980: (L-R) Barbara Bush, George HW Bush, Ronald Reagan, Nancy Reagan at 1980 Republican National Convention from Joe Louis Arena, in Detroit, MI. (Photo by ABC via Getty Images)
American politician (and future US President) George HW Bush speaks at an event during his campaign for the Republican Presidential nomination, Iowa, January 1980. His wife, future First Lady Barbara Bush, stands beside him. (Photo Robert R. McElroy/Getty Images)
Harnessed to Staff Sergeant Bryan Schell of United States Army Golden Knights, former US President George HW Bush (center, bottom) parachutes in celebration of his 80th birthday, outside Houston, Texas, June 13, 2004. The jump was performed near the Bush Presidential Library and was his fifth. (Photo by US Army via CNP/Getty Images)
During his campaign for the Republican Presidential nomination, American politician George HW Bush (left) speaks with journalist Stryker McGuire on a airplane during a flight, January 21, 1980. (Photo Robert R. McElroy/Getty Images)
KENNEBUNKPORT, ME - JULY 19: George HW Bush and his wife, Barbara Bush, greets supporters along Ocean Avenue in Kennebunkport, Maine on July 19, 1980. Bush is campaigning for the Republican presidential nomination. (Photo by Janet Knott/The Boston Globe via Getty Images)
WASHINGTON, DC -- CIRCA 1983: U.S. Vice President George H.W. Bush and Mrs. Barbara Bush at the Vice President's residence circa 1983 in in Washington, DC. (Photo by David Hume Kennerly/Getty Images)
WASHINGTON, DC -- CIRCA 1986: U.S. Vice President George H.W. Bush circa 1986 in in Washington, DC. (Photo by David Hume Kennerly/Getty Images)
Vice President George H.W. Bush (R), during re-enactment of Senate Swear- In. (Photo by Cynthia Johnson/The LIFE Images Collection/Getty Images)
American politician and US President Ronald Reagan (1911 - 2004) (right) and Vice President (and future President) George HW Bush relax together on Reagan's ranch, Santa Barbara, California, August 7, 1984. (Photo Robert R. McElroy/Getty Images)
Washington, DC. 6-25-1984 Vice-President George H.W. Bush and his wife Barbara Bush attend a fish fry on the South Lawn of the White House. Credit: Mark Reinstein (Photo by Mark Reinstein/Corbis via Getty Images)
President George H.W. Bush and Barbara Bush 1990. (Photo by Pete Souza/ABC via Getty Images)
ARLINGTON, TX - APRIL 3: George H.W. Bush throws out the first pitch before the Texas Rangers Opening Day game against the Chicago White Sox at The Ballpark in Arlington on April 3, 2000 in Arlington, Texas. (Photo by Ronald Martinez/Getty Images)
HOUSTON -- JUNE 10: Laura Bush, Texas Governor George W Bush, George HW Bush and former First Lady Barbara Bush at the Astrodome during part of the gala event celebrating the former president's 75th birthday in Houston, Texas on June 10, 1999. (Photo by David Hume Kennerly/Getty Images)
Former Presidents George HW Bush, Jimmy Carter, and Gerald Ford at a memorial service for King Hussein held at the American Embassy, Amman, Jordan, February 8, 1999. (Photo by David Hume Kennerly/Getty Images)
NEW ORLEANS - DECEMBER 7: Former U.S. Presidents Bill Clinton and George H.W. Bush speak at the University of New Orleans campus December 7, 2005 in New Orleans, Louisiana. Former U.S. Presidents Bill Clinton and George H.W. Bush, along with Louisiana Governor Kathleen Blanco, announced how the Bush-Clinton Katrina Fund would be dispersed. Grants worth $30 million would go to Gulf region higher education institutions devastated by Hurricane Katrina, $20 million in grants would go to a ministerial partnership with local and regional faith-based organizations and $40 million would be divided among the three states of Louisiana, Mississippi and Alabama for their recovery and relief funds. (Photo by Chris Graythen/Getty Images)
BEIJING, CHINA - NOVEMBER 15: (CHINA OUT) Former U.S. President George H.W. Bush speaks with post-surgery patients of Smile Train during a ceremony to launch the charity's new project on November 15, 2005 in Beijing, China. Free cleft lip surgery and related treatment provided by Smile Train, a non-profit organization, has helped many poor children in China. (Photo by China Photos/Getty Images)
UNITED STATES - SEPTEMBER 02: Former U.S. President George H.W. Bush, left, and his wife Barbara, acknowledge the audience on day two of the Republican National Convention (RNC) at the Xcel Energy Center in St. Paul, Minnesota, U.S., on Tuesday, Sept. 2, 2008. The RNC will run until Sept. 4. (Photo by Joshua Roberts/Bloomberg via Getty Images)
ST. PAUL, MN - SEPTEMBER 02: Former U.S. President George H.W. Bush attends day two of the Republican National Convention (RNC) at the Xcel Energy Center on September 2, 2008 in St. Paul, Minnesota. The GOP will nominate U.S. Sen. John McCain (R-AZ) as the Republican choice for U.S. President on the last day of the convention. (Photo by Scott Olson/Getty Images)
Buddy Peterson, left, Louisville, shook hands with former President George H.W. Bush near the 10th green at the 37th Ryder Cup at Valhalla Golf Cub on Friday, September 19, 2008, in Louisville, Kentucky. (Photo by David Perry/Lexington Herald-Leader/MCT via Getty Images)
Former President Bill Clinton (L), former President George H.W. Bush and his wife Barbara Bush stand for the National Anthem at the Points of Light Institute Tribute to Former President George H.W. Bush at The John F. Kennedy Center for Performing Arts on March 21, 2011 in Washington, DC. (Photo by Paul Morigi/WireImage)
HOUSTON - APRIL 08: Brad Mills, manager of the Houston Astros greets former US President George H.W. Bush at Minute Maid Park on April 8, 2011 in Houston, Texas. (Photo by Bob Levey/Getty Images)
HOUSTON, TX - APRIL 13: Former President George H.W. Bush watches a baseball game between the Chicago Cubs and the Houston Astros at Minute Maid Park on April 13, 2011 in Houston, Texas. (Photo by Bob Levey/Getty Images)
KENNEBUNKPORT, ME - JUNE 12: (EDITORS NOTE: Retransmission with alternate crop.) Former first lady Barbara Bush greets her husband and former U.S. President George H.W. Bush with a kiss after his successful skydive down to St. Anne's Episcopal Church on June 12, 2014 in Kennebunkport, Maine. The President is celebrating his 90th birthday today. (Photo by Eric Shea/Getty Images)
COLLEGE STATION, TX - OCTOBER 21: (L-R) Former United States Presidents Jimmy Carter, George H.W. Bush, Barack Obama, George W. Bush, and Bill Clinton address the audience during the 'Deep from the Heart: The One America Appeal Concert' at Reed Arena on the campus of Texas A&M University on October 21, 2017 in College Station, Texas. (Photo by Rick Kern/Getty Images for Ford Motor Company)
U.S. first lady Barbara Bush is pictured with President George H.W. Bush durina a presidential vacation in Kennebunkport, Maine, U.S., in this undated photo. U.S.. Former U.S. first lady Barbara Bush, the wife of the 41st president, George H.W. Bush, and mother of the 43rd, George W. Bush died on April 17, 2018. She was 92. REUTERS/Rick Wilking
FILE PHOTO: Former U.S. President George H.W. Bush waves from the field before game five of the 2017 World Series between the Los Angeles Dodgers and the Houston Astros in Houston, Texas, U.S. on October 29, 2017. REUTERS/David J. Phillip/Pool via USA TODAY Sports MANDATORY CREDIT
Former U.S. President George H.W. Bush participates in the coin toss ahead of the start of Super Bowl LI between the New England Patriots and the Atlanta Falcons as former first lady Barbara Bush looks on in Houston , Texas, U.S., February 5, 2017. REUTERS/Adrees Latif TPX IMAGES OF THE DAY
Mar 29, 2015; Houston, TX, USA; United States former president George H.W. Bush and wife Barbara Bush greet Dallas Cowboys quarterback Tony Romo , head coach Jason Garrett and tight end Jason Witten before the finals of the south regional of the 2015 NCAA Tournament between the Duke Blue Devils and Gonzaga Bulldogs at Reliant Stadium. Mandatory Credit: Kevin Jairaj-USA TODAY Sports
U.S. President Barack Obama and first lady Michelle Obama are greeted by former President George H.W. Bush upon their arrival on Air Force One in Houston, Texas April 9, 2014. Obama is in Houston to attend two Democratic Party fund raisers. REUTERS/Kevin Lamarque (UNITED STATES - Tags: POLITICS)
U.S. President Barack Obama and former President George H. W. Bush (R) applaud during an event to honor the winner of the 5,000th Daily Point of Light Award at the White House in Washington July 15, 2013. REUTERS/Kevin Lamarque (UNITED STATES - Tags: POLITICS)
Former U.S. presidents George W. Bush (C) and his father George H.W. Bush laugh alongside former first ladies Laura Bush (R) and Barbara Bush (L) during the dedication ceremony for the George W. Bush Presidential Center in Dallas, April 25, 2013. Obama is in Texas to stand shoulder-to-shoulder with former president George W. Bush in what could serve as a powerful reminder of the ongoing struggle against terrorism, from the Sept. 11 attacks to the Boston Marathon bombings. REUTERS/Jason Reed (UNITED STATES - Tags: POLITICS)
HOUSTON, TX - OCTOBER 29: Former United States Presidents George H.W. Bush and George W. Bush prepare to throw out the ceremonial first pitch before in game five of the 2017 World Series at Minute Maid Park on October 29, 2017 in Houston, Texas. (Photo by Christian Petersen/Getty Images)
WASHINGTON, DC - JULY 15: Former President George H. W. Bush sits in a wheelchair during an event in the East Room at the White House, July 15, 2013 in Washington, DC. Bush joined President Obama in hosting the event to honor the 5,000th Daily Point of Light Award winner. (Photo by Mark Wilson/Getty Images)
Former U.S. President George H.W. Bush salutes as he departs the East Front of the U.S. Capitol Building after Barack Obama was sworn in as the 44th president of the United States in Washington January 20, 2009. Barack Obama took power as the first black U.S. president on Tuesday and quickly turned the page on the Bush years, urging Americans to rally to end the worst economic crisis in 70 years and repair the U.S. image abroad. REUTERS/Tannen Maury/Pool (UNITED STATES)
Former U.S. President George. H.W. Bush (C) smiles at his wife Barbara (L), as their son and former President George W. Bush (R) laughs, during the "All Together Now - A Celebration of Service" at the John F. Kennedy Center for Performing Arts in Washington March 21, 2011. REUTERS/Jim Young (UNITED STATES - Tags: POLITICS ENTERTAINMENT IMAGES OF THE DAY)
Former U.S. President George H.W. Bush (R) watches as his son, former President George W. Bush, throws a ceremonial first pitch prior to the start of Game 4 of Major League Baseball's World Series between the San Francisco Giants and the Texas Rangers, in Arlington, Texas, October 31, 2010. REUTERS/Brian Snyder (UNITED STATES - Tags: SPORT BASEBALL IMAGES OF THE DAY)
Former U.S. President George H.W. Bush attends the funeral service for his wife, former first lady Barbara Bush, with his son the 43rd U.S. President George W. Bush at St. Martin's Episcopal Church in Houston, Texas, U.S., April 21, 2018. REUTERS/Richard Carson TPX IMAGES OF THE DAY
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In other words, grab a tissue now!

"They were still playful and liked to poke fun at each other even in their 90s," Evan Sisley, a personal aide to the former commander in chief, recalled in the book that hit stores Tuesday. "Once when President Bush was doing a breathing treatment, he was waving the nebulizer device while periodically puffing on it from the corner of his mouth like it was a pipe. Mrs. Bush walked in and said, 'George, you really must shut your mouth,' encouraging him to properly seal his lips around the device and ingest the medication that was supposed to help him breathe. In standard Bush form, President Bush responded with, 'What's good for the goose is good for the gander.'"

44 PHOTOS
Former first lady Barbara Bush throughout the years
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Former first lady Barbara Bush throughout the years
First Lady Barbara Bush sheltering (from sun) under umbrella, listening to her incumbent husband George speak at campaign rally. (Photo by Dirck Halstead/The LIFE Images Collection/Getty Images)
politician US President George HW Bush and First Lady Barbara Bush wave from a lectern, Saudi Arabia, November 22, 1990. The visit, occurring during Operation Desert Shield, was part of a Thanksgiving tour. (Photo by Chief Warrant Officer 2 Ed Bailey/PhotoQuest/Getty Images)
Former First Lady, Barbara Bush listens to speakers during the second day of the Republican National Convention at the Xcel Center in St. Paul, Minnesota. (Photo by Ramin Talaie/Corbis via Getty Images)
FILE WASHINGTON, DC - NOV 19, 1992: Barbara Bush gives Hillary Clinton a tour of the White House. (Photo by James A. Parcell/The Washington Post via Getty Images)
Former U.S. President George H.W. Bush participates in the coin toss ahead of the start of Super Bowl LI between the New England Patriots and the Atlanta Falcons as former first lady Barbara Bush looks on in Houston , Texas, U.S., February 5, 2017. REUTERS/Adrees Latif TPX IMAGES OF THE DAY
Gov. George W. Bush gives his mother and former first lady Barbara Bush a hug after a family portrait session, June 10. The Bush family was in Houston celebrating the 75th and 74th birthdays, respectively, of the former president and first lady. aal/ Photo by Adrees A. AAL/RC
First Lady Barbara Bush waving to crowd at campaign rally. (Photo by Dirck Halstead/The LIFE Images Collection/Getty Images)
US President George Bush, Queen Elizabeth II and First Lady Barbara Bush shake hands with Mike Gallego, Rick Honeycutt, and Jose Canseco of the Oakland Athletics at game between the Athletics and the Baltimore Orioles. (Photo by � Wally McNamee/CORBIS/Corbis via Getty Images)
First Lady Barbara Bush and Russian First Lady Naina Yeltsin cooking a huge cauldron of soup at a homeless facility during the Yeltsins' trip to Washington. (Photo by Carol T. Powers/White House/The LIFE Picture Collection/Getty Images)
Former U.S. first lady Barbara Bush, along with Second Lady Jill Biden (R), greets members of the audience during an event to honor the winner of the 5,000th Daily Point of Light Award at the White House in Washington July 15, 2013. REUTERS/Kevin Lamarque (UNITED STATES - Tags: POLITICS)
First Lady Barbara Bush carrying grandchild Ellie in Kennebunkport. (Photo by David Valdez/White House/The LIFE Picture Collection/Getty Images)
U.S. President Barack Obama laughs alongside former first lady Barbara Bush during the dedication ceremony for the George W. Bush Presidential Center in Dallas, April 25, 2013. Obama is in Texas to stand shoulder-to-shoulder with former president George W. Bush in what could serve as a powerful reminder of the ongoing struggle against terrorism, from the Sept. 11 attacks to the Boston Marathon bombings. REUTERS/Jason Reed (UNITED STATES - Tags: POLITICS)
First Lady Barbara Bush wearing Rangers jacket w. her arm around son George W. Bush. (Photo by Phil Huber/The LIFE Images Collection/Getty Images)
KENNEBUNK, ME - MAY 19: Former first lady Barbara Bush waves to the crowd as she arrives at the dedication of the Mathew J. Lanigan bridge Friday, May 19, 2017. The bridge was first built in 1933 and connects Kennebunk and Kennebunkport. The new bridge cost $2.7 million and was completed in a very short time frame. (Photo by Gabe Souza/Portland Press Herald via Getty Images)
GREENVILLE, SC - FEBRUARY 19: Jeb Bush's wife Columba Bush, left, and former first lady Mrs. Barbara Bush share a moment during a campaign event with Republican presidential candidate Jeb Bush February 19, 2016 in Greenville, South Carolina. The South Carolina Republican primary will be held Saturday, February 20. (Photo by Sean Rayford/Getty Images)
HOUSTON, TX - OCTOBER 29: Former first lady Barbara Bush looks on before game five of the 2017 World Series between the Houston Astros and the Los Angeles Dodgers at Minute Maid Park on October 29, 2017 in Houston, Texas. (Photo by David J. Phillip - Pool/Getty Images)
Barbara Bush, former U.S. first lady, center, center, looks over a menu while having lunch her son Jeb Bush, former governor of Florida and 2016 Republican presidential candidate, not pictured, at MaryAnn's Diner in Derry, New Hampshire, U.S., on Friday, Feb. 5, 2016. Bush appeared alongside Barbara Bush reminding voters of his political dynasty in a last-ditch attempt to revive his faltering campaign. Photographer: Daniel Acker/Bloomberg via Getty Images
Barbara Bush, former U.S. first lady, left, and her son Jeb Bush, former governor of Florida and 2016 Republican presidential candidate, right, stand for a photograph with an employee at MaryAnn's Diner in Derry, New Hampshire, U.S., on Friday, Feb. 5, 2016. Bush appeared alongside Barbara Bush reminding voters of his political dynasty in a last-ditch attempt to revive his faltering campaign. Photographer: Daniel Acker/Bloomberg via Getty Images
Former first lady Barbara Bush (L) and Jenna Welch, mother of first lady Laura Bush, listen as U.S. President George W. Bush and first lady Laura Bush speak about global literacy at the New York Public Libary in New York City September 18, 2006. REUTERS/Kevin Lamarque (UNITED STATES)
First lady Laura Bush (L) stands with former U.S. President George H. W. Bush (C) as his wife Barbara Bush (R) speaks during dedication ceremonies at the restored childhood home of U.S. President George W. Bush in Midland, Texas, April 11, 2006. The Bushes lived in the house from 1952-1955. REUTERS/Jeff Mitchell
First lady Laura Bush (L) and her mother-in-law Barbara Bush (R) wave to reporters as they await President George W. Bush's return to the White House from a short visit to Florida, May 10, 2006. REUTERS/Jonathan Ernst
Former first ladies Nancy Reagan (R), Barbara Bush (C) and former Secretary of State George Schultz (L) sing during a memorial service for billionaire publisher, philanthropist, and former U.S. ambassador to Britain, Walter Annenberg at the Academy of Music in Philadelphia, December 6, 2002. Annenberg, who created Seventeen magazine and TV Guide died October 1, 2002, at the age of 94. REUTERS/Tim Shaffer TMS
First Lady Barbara Bush embraces Mrs. Hillary Clinton as she welcomes her to the White House November 19, 1992 on her first visit to Washington since her husband's election victory over President George Bush. The Clintons will move into the White House on January 20. Reuters/Steve Jaffe
KENNEBUNKPORT, UNITED STATES: Former first lady Barbara Bush (L) shakes hands with a priest after atttending Sunday service at Saint Ann's Episcopal Church as former US president George H.W. Bush ((R) looks on 27 August 2006 in Kennebunkport, Maine. US President George W. Bush was in Kennebunkport to visit his parents and to attend a relative's wedding. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
WASHINGTON - MAY 10: Former first lady Barbara Bush takes a photograph from the Truman Balcony, while her son, U.S. President George W. Bush, returns to the White House May 10, 2006 in Washington, DC. President Bush was returning from a trip to Florida where he was promoting the Medicare prescription drug benefit program. (Photo by Win McNamee/Getty Images)
Former First Lady Barbara Bush speaks to a packed House chamber in Austin, where she gave readings from her new book, 'Reflections,' an account of life after the White House. The event was a part of the Texas Book Festival, founded in 1995 by current First Lady Laura Bush. (Photo by Robert Daemmrich Photography Inc/Corbis via Getty Images)
THE TONIGHT SHOW WITH JAY LENO -- Episode 2587 -- Pictured: (l-r) Former First Lady Barbara Bush during an interview with host Jay Leno -- (Photo by: Paul Drinkwater/NBC/NBCU Photo Bank via Getty Images)
U.S. President George Bush (L) and First Lady Barbara Bush play with confetti 20 August 1992 as it showered them at the 1992 Republican National Convention. The confetti and more than 100,000 balloons were dropped after the president concluded his speech. (Photo credit should read PAUL J. RICHARDS/AFP/Getty Images)
US First Lady Barbara Bush and her son George Bush Jr attend the 1992 Republican National Convention on August 17, 1992 in Houston. AFP PHOTO CHRIS WILKINS (Photo credit should read CHRIS WILKINS/AFP/Getty Images)
WASHINGTON, DC - FEBRUARY 7: This file photo shows former US First Lady Barbara Bush (L) as she prepares to throw a rugby ball 07 February 1992,in Washington,DC, after receiving it from Mary Sullivan (R), captain of the US national women's rugby team. The US team, which won the World Cup, received the Team Spirit Award from Mrs. Bush. (Photo credit should read ROBERT GIROUX/AFP/Getty Images)
Pres. George Bush and First Lady Barbara (in sunglasses) riding in their Cigarette boat Fidelty w. an unident. man. (Photo by Susan Biddle/White House/The LIFE Picture Collection/Getty Images)
American First Lady Barbara Bush at the White House's Christmas party. (Photo by jean-Louis Atlan/Sygma via Getty Images)
5-1989 On the left is the first lady Barbara Bush Going over the list of Items to be put on the Cart on the far right is Neil Bush her son and helper at the Food Bank Phillip Warth is the smiler And Volunteer Sam Aguilar is helping to fill order and show the first Lady where things are ***** Credit: The Denver Post (Denver Post via Getty Images)
First Lady Barbara Bush Holding Out Hands (Photo by � Wally McNamee/CORBIS/Corbis via Getty Images)
UNITED STATES: (L-R) First Lady Barbara Bush and Barbara Walters 1989 (Photo by Kimberly Butler/ABC via Getty Images)
UNITED STATES: President George H.W. Bush, First Lady Barbara Bush and Barbara Walters 1989 (Photo by Kimberly Butler/ABC via Getty Images)
WASHINGTON, DC -- FEBRUARY 23: (L to R) First Lady Nancy Reagan, Mrs. Barbara Bush, President Ronald Reagan, and Vice President George H.W. Bush gather at the Vice President's residence on February 23, 1981 in Washington, DC. (Photo by David Hume Kennerly/Getty Images).
During his campaign for the Republican Presidential nomination, American politician (and future US President) George HW Bush (left) sits with his wife, future First Lady Barbara Bush, and watch television, Iowa, January 1980. (Photo Robert R. McElroy/Getty Images)
NBC NEWS -- 'Ronald Reagan First Presidential Inauguration' -- Pictured: (l-r) U.S. Vice President George Bush, Second Lady Barbara Bush during the first inauguration of President Ronald Reagan on January 20, 1981 in Washington D.C. -- (Photo by: NBC News/NBCU Photo Bank via Getty Images)
Former first lady, Barbara Bush laughs with her son at the GOP convention in Dallas, Texas in 1992. (Photo by � Bill Gentile/CORBIS/Corbis via Getty Images)
George Bush arrives at a presidential campaign event with his wife, Laura, and his mother, former First Lady Barbara. Bush won the 2000 Presidential Election against Vice President Al Gore after a controversial vote recount in Florida. (Photo by Brooks Kraft LLC/Sygma via Getty Images)
Former first lady Barbara Bush (L) and first lady Michelle Obama walk into an event honoring the 5,000th winner of the "Daily Point of Light" award in the East Room of the White House in Washington July 15, 2013. REUTERS/Larry Downing (UNITED STATES - Tags: POLITICS)
FILE WASHINGTON, DC - JAN 6, 1994: Barbara Bush gives Hillary Clinton a tour of the White House. (Photo by James A. Parcell/The Washington Post via Getty Images)
First Lady Barbara Bush talks with an army trooper as she and husband, President George H.W. Bush, eat a Thanksgiving Day lunch with the troops in eastern Saudi Arabia on November 22, 1990. REUTERS/Rick Wilking ( SAUDI ARABIA - Tags: POLITICS CIVIL UNREST) BEST QUALITY AVAILABLE
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That sassy exchange mirrored a much more significant one the couple had the day before Barbara's death in April 2018.

"President Bush wanted to let her know that he understood that she was dying and that it was going to be OK," Sisley explained. "He went into the living room and said, 'Bar, I'm not worried about you.' She looked up at him from her chair where she sat needlepointing and said, 'I'm not worried about you either, Georgie.'"

According to Sisley, although it wasn't a "grand statement," it was "perfect," adding, "They spent a life protecting and devoted to each other. They were secure in their faith, and they knew where the other was heading. They just wanted each other to know that it was going to be OK."

George and Barbara were married for 73 years, and he died less than eight months after his wife.

"They believed in life devoted to the service of others, and their devotion to each other was the finest example of that creed," Sisley continued. "Barbara Bush showed me, not by words, but by example how to be a spouse; how to be the fierce protector of another human being while also putting their needs before your own. Actions speak louder than words."

Sisley then ended the story with the words the devoted duo said to each other at the end of every night: They simply loved the other "more than tongue can tell." 

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