EXCLUSIVE: Alan Thicke's son Carter credits Leonardo DiCaprio for helping him get through dad's tragic death


Carter Thicke is getting candid about the tremendous support he's received following the tragic death of his father, Alan Thicke.

In an exclusive sit-down interview with ET special correspondent Keltie Knight, the 19-year-old praised one actor in particular for helping him get through it all: His dad's Growing Pains co-star, Leonardo DiCaprio.

WATCH: Alan Thicke Remembered at Star-Studded Memorial Hosted by Son Robin

During Alan's star-studded memorial service held at his ranch in Carpinteria, California, last month, DiCaprio gave a moving speech in honor of his close pal, who died at age 69 after suffering a heart attack while playing hockey with Carter.

20 PHOTOS
Alan Thicke and Carter Thicke together
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Alan Thicke and Carter Thicke together
UNIVERSAL CITY, CA - JUNE 24: Actor Alan Thicke and son Carter Thicke attending the premiere of 'Adventures of Rocky and Bullwinkle' on June 24, 2000 at Loew's Universal Cinema in Universal City, California. (Photo by Ron Galella/WireImage)
Alan Thicke and his son Carter at the premiere of 'Joseph: King of Dreams', DreamWorks' first-ever animated musical feature-length movie to debut on VHS and DVD. In celebration of the film's theme of brotherhood, DreamWorks honored the Big Brothers of America and donated $10,000.00 to the organization. 'The World's Largest Dream Coat', created by 50 pairs of Big and Little Brothers, was unveiled at the party held at the Egyptian Theater, in Los Angeles, Ca. 10/30/00. Photo by Kevin Winter/ImageDirect.
Alan Thicke & Son Carter during 'The Emperor's New Groove' Los Angeles Premiere at El Captain Theatre in Hollywood, California, United States. (Photo by SGranitz/WireImage)
HOLLYWOOD - OCTOBER 28: Actor Alan Thicke, date and son Carter Thicke attending the world premiere of 'Monsters, Inc.' on October 28, 2001 at El Capitan Theater in Hollywood, California. (Photo by Ron Galella/WireImage)
WEST HOLLYWOOD, CA - DECEMBER 3: Actor Alan Thicke, date and son Carter Thicke attending 'Diet Coke With Lemon Hosts Luncehon Benefiting the USO' on December 3, 2001 at Spago Restaurant in West Hollywood, California. (Photo by Ron Galella/WireImage)
Tanya Callau with Alan Thicke and his son Carter (center) (Photo by Cesare Bonazza/WireImage)
UNITED STATES - JULY 25: Gibson/Baldwin 'Night at the Net' Charity Event in Los Angeles, United States on July 25, 2005 - Alan Thicke and son Carter William Thicke at the Gibson/Baldwin 'Night at the Net' Charity Event at the Los Angeles Tennis Center at UCLA in Westwood, CA. (Photo by Mike FANOUS/Gamma-Rapho via Getty Images)
Alan Thicke and Carter William Thicke during 2006 TV Land Awards - Backstage and Audience at Barker Hangar in Santa Monica, California, United States. (Photo by Jeff Kravitz/FilmMagic)
LAS VEGAS - JUNE 18: (C) Alan Thicke sits with his wife (L) Tanya and son (R) Carter during the 2009 NHL Awards at The Pearl concert theater at the Palms Casino Resort June 18, 2009 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images for NHL)
ANAHEIM, CA - JUNE 06: Actors Alan Thicke (L) and son Carter attend Game Five of the 2007 NHL Stanley Cup Finals between the Ottawa Senators and the Anaheim Ducks on June 6, 2007 at Honda Center in Anaheim, California. (Photo by John M. Heller/Getty Images for the NHL)
BEVERLY HILLS, CA - MAY 22: (L-R) Tanya Callau, Carter Thicke and actor Alan Thicke arrive at the 2011 Cedars Sinai Sports Spectacular at Hyatt Regency Century Plaza on May 22, 2011 in Beverly Hills, California. (Photo by John Sciulli/WireImage)
CELEBRITY WIFE SWAP - 'Gilbert Gottfried / Alan Thicke' - The wives of actor Alan Thicke and comedian Gilbert Gottfried trade homes for one week, on 'Celebrity Wife Swap,' TUESDAY, MARCH 12 (8:00-9:00 p.m., ET) on the ABC Television Network. (ABC/Rick Rowell) TANYA CALLAU, ALAN THICKE, CARTER THICKE
TORONTO - SEPTEMBER 21 - Canadian actor Alan Thicke (2nd from right) is joined by son's Carter (left) and Brennan (right) and wife Tanya, during unveiling of his plaque. Canada's Walk of Fame, inducted a number of Canadian artists today. The unveiling of the plaques was held on Yonge Street, outside the Elgin Theatre, on September 21, 2013. (Rick Madonik/Toronto Star via Getty Images)
TORONTO, ON -JUNE 25 - Alan Thicke at the Joe Carter Classic at Eagles Nest golf course.Toronto, June 25, 2014. (Rene Johnston/Toronto Star via Getty Images)
TORONTO, ON - JUNE 26: Actor Alan Thicke and son Carter Thicke attend the Joe Carter Classic Charity Golf Tournament after-party at Shangri-La Hotel on June 26, 2014 in Toronto, Canada. (Photo by George Pimentel/WireImage)
BEVERLY HILLS, CA - JULY 08: (L-R) Carter William Thicke, Tanya Callau and Alan Thicke pose backstage during the 2014 Summer Television Critics Association at The Beverly Hilton Hotel on July 8, 2014 in Beverly Hills, California. (Photo by Frederick M. Brown/Getty Images)
TORONTO, ON - MARCH 01: Alan Thicke, Tanya Thicke and Carter Thicke arrive at the 2015 Canadian Screen Awards at the Four Seasons Centre for the Performing Arts on March 1, 2015 in Toronto, Canada. (Photo by George Pimentel/WireImage)
BURBANK, CA - APRIL 26: (L-R) TV personalities Carter Thicke, Tanya Callau and Alan Thicke attend The 42nd Annual Daytime Emmy Awards at Warner Bros. Studios on April 26, 2015 in Burbank, California. (Photo by John Sciulli/Getty Images for NATAS)
WEST HOLLYWOOD, CA - AUGUST 10: Actor Alan Thicke (R), wife Tanya Callau and son Carter Thicke arrive at the CBS, CW And Showtime 2015 Summer TCA Party at Pacific Design Center on August 10, 2015 in West Hollywood, California. (Photo by Gregg DeGuire/Getty Images)
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"You could see [Leo's] genuine love and respect for my dad," Carter said of the Oscar winner and environmental activist. "Leo is just the most amazing guy. I mean, when it's the environment and then this, he is the most incredible, down-to-earth, just loving guy."

"And, you know, [he's] also the busiest guy on earth," Carter continued. "To take his time to come out and share his respects and spend time with the family -- he was really, really incredible through all of this."

Carter actually credited the entire Growing Pains cast for being there throughout this tumultuous time, telling ET, "They're an amazing group and they've been around a lot."

"We did the -- I think they did the Growing Pains anniversary special at the ranch recently, so I've kind of grown up with all of them and their children," he added. "So, it was really, really incredible to have them there."

WATCH: Alan Thicke's Son Carter Opens Up About Their Heartbreaking Last Moments Together

He was also grateful to see some of Alan's best friends at the service, like Bob Saget, Bill Maher, Wayne Gretzky and David Foster. "These guys that I've grown up with ... just opening their hearts out and crying and telling these hilarious stories," he said. "It was incredible to see, because he really did touch so many people's hearts."

35 PHOTOS
Alan Thicke through the years
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Alan Thicke through the years

Actress Valerie Harper and actor Alan Thicke attend the Kenny Rogers in Concert: 'The Gambler' Tour on September 14, 1979 at the Universal Amphitheatre in Universal City, California.

(Photo by Ron Galella/WireImage)

Actor Alan Thicke and son Brennan Thicke attending 'Celebrity Fashion Show Benefiting Windfeather' on June 10, 1984 at the Beverly Wilshire Hotel in Beverly Hills, California.

(Photo by Ron Galella/WireImage)

Actor Alan Thicke and actress Gina Gallego attending Third Annual American Diabetes Association Waiters Brunch on February 9, 1985 at Baxter's Restaurant in Westwood, California.

(Photo by Ron Galella/WireImage)

Actor Alan Thicke attending the premiere party for 'Out of Africa' on December 10, 1985 at the Plitt Theater in Century City, California.

(Photo by Ron Galella/WireImage)

GROWING PAINS - 'The Kid' - Airdate: December 16, 1985.

(Photo by ABC Photo Archives/ABC via Getty Images) 

Actor Alan Thicke attending 59th Annual Hollywood Christmas Parade on November 25, 1990 in Hollywood, California.

(Photo by Ron Galella/WireImage)

Actor Alan Thicke and sons Brennan Thick and Robin Thicke and Actress Joanna Kerns attend the 'Celebration of Tradition' A Gala Event Gathering Warner Bros. Stars on June 2, 1990 at Warner Bros. Studios in Burbank, California.

(Photo by Ron Galella, Ltd/WireImage)

Actor Alan Thicke attending 9th Annual MacLaren Children's Center Benefit on March 10, 1990 at Henry Winkler's home in Toluca Lake, California.

(Photo by Ron Galella/WireImage)

Actor Alan Thicke attending 'Hollywood Stars Night Baseball Game' on August 22, 1992 at Dodger Stadium in Los Angeles, California.

(Photo by Ron Galella/WireImage)

Actor Alan Thicke and date Julie Tovilar attending the world premiere of 'The Bodyguard' on November 23, 1992 at Mann Chinese Theater in Hollywood, California.

(Photo by Ron Galella/WireImage)

THE TONIGHT SHOW WITH JAY LENO -- Episode 646

Pictured: Actor Alan Thicke, host Jay Leno during an interview on March 6, 1995.

(Photo by: Margaret Norton/NBC/NBCU Photo Bank via Getty Images)

Alan Thicke drives a ball during the Lexus Challenge held at La Quinta Country Club in La Quinta, California. Mandatory

(Jon Cuban /Allsport)

Actor Alan Thicke attending the premiere of 'G.I. Jane' on August 6, 1997 at Mann Village Theater in Westwood, California.

(Photo by Ron Galella/WireImage)

Alan Thicke and Jason Alexander in dress rehearsal of 'Promises, Promises,' a musical at the Freud Playhouse at UCLA. Photo Iris Schneider.

(Photo by Iris Schneider/Los Angeles Times via Getty Images)

Actor Alan Thicke and son Carter Thicke attending the premiere of 'Adventures of Rocky and Bullwinkle' on June 24, 2000 at Loew's Universal Cinema in Universal City, California.

(Photo by Ron Galella/WireImage)

Alan Thicke during 'Me, Myself & Irene' Los Angeles Premiere at Mann Village Theatre in Westwood, California, United States.

(Photo by SGranitz/WireImage)

Actor Alan Thicke skates at the opening of the Universal CityWalk Ice Rink on November 29, 2002 in Universal City , California. The rink will be open to the public through January 5, 2003.

(Photo by Frederick M. Brown/Getty Images)

Actor Alan Thicke attends the Los Angeles premiere of 'Pinocchio' on December 22, 2002 in Los Angeles, California. The film opens in theaters nationwide on Wednesday December 25, 2002.

(Photo by Robert Mora/Getty Images)

Actor/producer Alan Thicke and model Tanya Callau pose after being married on May 7, 2005 at The One&Only Pamilla Resort in Cabo San Lucas, Mexico.

(Photo by Vince Bucci/Getty Images)

Alan Thicke, Tanya Callou, Paula Patton and Robin Thicke attends the Opening Night at the 40/40 Club in Las Vegas, NV December 30, 2007.

(Photo by Johnny Nunez/WireImage)

Actor Alan Thicke poses for photographs with his 2008 Jaguar XJ outside his home in Carpinteria, December 1, 2011.

(Photo by Ann Johansson/Corbis via Getty Images)

'I'm In The Band' on Disney XD.

(Photo by Bruce Birmelin/Disney XD via Getty Images)

Hoda Kotb and Alan Thicke appear on NBC News' 'Today' show

(Photo by Peter Kramer/NBC/NBCU Photo Bank via Getty Images)

Actor Alan Thicke and Pharrell Williams attend the Qream Launch Party on July 14, 2011 in Hollywood, California.

(Photo by Johnny Nunez/WireImage)

Alan Thicke attends the 10th Annual Michael Jordan Celebrity Invitational Celebrity Dinner in BESO At Crystals at CityCenter on March 31, 2011 in Las Vegas, Nevada.

(Photo by Chris Weeks/WireImage)

Actor Alan Thicke and recording artist Robin Thicke attend The GRAMMY Nominations Concert Live!! Countdown to Music's Biggest Night at Nokia Theatre L.A. Live on December 6, 2013 in Los Angeles, California.

(Photo by Charley Gallay/WireImage)

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Carole Radziwill and Alan Thicke

(Photo by: Charles Sykes/Bravo/NBCU Photo Bank via Getty Images)

Actors Charlie Sheen and Alan Thicke attend the Joe Carter Classic Charity Golf Tournament after-party at Shangri-La Hotel on June 26, 2014 in Toronto, Canada. 

(Photo by George Pimentel/WireImage)

Actor Alan Thicke attends the 2013 Summer TCA Party for the Hallmark Channel's on July 8, 2014 in Beverly Hills, California.

(Photo by Paul Archuleta/FilmMagic)

Alan Thicke attends the Dodgers' Hollywood Stars Night Game at Dodger Stadium on June 6, 2015 in Los Angeles, California.

(Photo by Noel Vasquez/GC Images)

Actor Flex Alexander, producer Tony Cornelius, actor Alan Thicke and actor/comedian Cedric the Entertainer attend the second annual Coach Woodson Las Vegas Invitational pairings party at the Lavo Restaurant & Nightclub at The Palazzo Las Vegas on July 12, 2015 in Las Vegas, Nevada.

(Photo by Bryan Steffy/Getty Images for PGD Global)

Alan Thicke arrives for the 'Cool Comedy - Hot Cuisine' benefit for the Scleroderma Research Foundation at Regent Beverly Wilshire Hotel on June 5, 2015 in Beverly Hills, California.

(Photo by Gabriel Olsen/FilmMagic)

Actor Alan Thicke and wife Tanya Callau arrive at the premiere of STX Entertainment's 'Bad Moms' at Mann Village Theatre on July 26, 2016 in Westwood, California.

(Photo by Gregg DeGuire/WireImage)

Actor Alan Thicke arrives for the Comedy Central Roast Of Rob Lowe at Sony Studios on August 27, 2016 in Los Angeles, California.

(Photo by Greg Doherty/Getty Images)

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"David Foster was incredible at the funeral," Carter noted. "He told one of the funniest and most beautiful and touching stories as his eulogy at the funeral. There was just so many people who just cared and it was so genuine and just a lot of love for him."

Later in our interview, Carter also opened up about the outpouring of love he and his family received from fans on social media. From personal messages to beautiful tributes, Carter said it was "enlightening" to see how many hearts his father touched over the years.

"It was just random people on the internet, you know. It was amazing to see the outpour for him and it was -- that was something that made me really, really, really proud," he explained. "That was at least a shining moment 'cause I knew that [my dad] would be ecstatic to be the No. 1 trending topic on Twitter. I'm sure he would have loved that."

But out of all the tributes, Carter told ET that there was one that really stood out.

WATCH: Leonardo DiCaprio Remembers 'Growing Pains' Co-Star Alan Thicke

"I think Leo's," he revealed. "Leo's tweet, the press release the day before was really, really beautiful, and he even went -- I didn't even have his number -- he went out of his way to send me a text. I think his was really, really touching."

27 PHOTOS
Alan Thicke on 'Growing Pains'
See Gallery
Alan Thicke on 'Growing Pains'

GROWING PAINS - 'Ben's First Kiss' - Airdate: December 7, 1988.

(Photo by ABC Photo Archives/ABC via Getty Images)

GROWING PAINS - Gallery - Shoot Date: October 14, 1987.

(Photo by ABC Photo Archives/ABC via Getty Images) 

GROWING PAINS - 'B=MC2' - Airdate: November 30, 1991.

(Photo by ABC Photo Archives/ABC via Getty Images) 

GROWING PAINS - 'There Must Be a Pony' - Airdate: November 2, 1991.

(Photo by ABC Photo Archives/ABC via Getty Images) 

'There Must Be a Pony' - Season Seven - 11/2/91

(Photo by ABC Photo Archives/ABC via Getty Images)

GROWING PAINS - 'The Big Fix' - Airdate: November 9, 1991.

(Photo by ABC Photo Archives/ABC via Getty Images)

GROWING PAINS - 'Jason Sings the Blues' - Airdate: October 19, 1991.

(Photo by ABC Photo Archives/ABC via Getty Images) 

GROWING PAINS - 'The Kid's Still Got It' - Airdate: October 26, 1991.

(Photo by ABC Photo Archives/ABC via Getty Images)

GROWING PAINS - 'Paper Tigers' - Airdate: October 5, 1991.

(Photo by ABC Photo Archives/ABC via Getty Images) 

GROWING PAINS - 'Stop, Luke and Listen' - Airdate: September 25, 1991.

(Photo by ABC Photo Archives/ABC via Getty Images) 

GROWING PAINS - 'Happy Halloween' - Airdate: October 31, 1990.

(Photo by ABC Photo Archives/ABC via Getty Images) 

GROWING PAINS - Gallery - Shoot Date: September 28, 1991.

(Photo by ABC Photo Archives/ABC via Getty Images) 

GROWING PAINS - 'Happy Halloween' - Airdate: October 31, 1990.

(Photo by ABC Photo Archives/ABC via Getty Images) 

GROWING PAINS - 'The New Deal - Part I' - Airdate: November 8, 1989.

(Photo by ABC Photo Archives/ABC via Getty Images) 

GROWING PAINS - 'Future Shock' (a.k.a., 'Maggie's Dream') - Airdate: February 21, 1990.

(Photo by ABC Photo Archives/ABC via Getty Images)

GROWING PAINS - 'Guess Who's Coming to Dinner?' - Airdate: November 16, 1988.

(Photo by ABC Photo Archives/ABC via Getty Images) 

GROWING PAINS - 'Birth of a Seaver' - Airdate: October 26, 1988.

(Photo by ABC Photo Archives/ABC via Getty Images) 

GROWING PAINS - 'Family Ties' - Airdate: November 2, 1988.

(Photo by ABC Photo Archives/ABC via Getty Images)

GROWING PAINS - 'This is Your Life' - Airdate: November 17, 1987.

(Photo by ABC Photo Archives/ABC via Getty Images) 

GROWING PAINS - 'Big Brother's Not Watching' - Shoot Date: June 5, 1987.

(Photo by ABC Photo Archives/ABC via Getty Images)

GROWING PAINS - 'Aloha' - Airdate: September 18, 1987.

(Photo by ABC Photo Archives/ABC via Getty Images) 

GROWING PAINS - 'Jason and the Cruisers' - Airdate: September 30, 1986.

(Photo by ABC Photo Archives/ABC via Getty Images)

GROWING PAINS - 'Charity Begins in the Home' - Airdate: February 18, 1986.

(Photo by ABC Photo Archives/ABC via Getty Images)

GROWING PAINS - Pilot - Airdate: September 24, 1985.

(Photo by ABC Photo Archives/ABC via Getty Images)

GROWING PAINS - Gallery - Shoot Date: November 20, 1985.

(Photo by ABC Photo Archives/ABC via Getty Images)

GROWING PAINS - Gallery - Shoot Date: July 22, 1985.

(Photo by ABC Photo Archives/ABC via Getty Images)

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