Hollywood legend Kirk Douglas' infidelity revealed in new book

Kirk and Anne Douglas are getting candid about their 63-year marriage.

Hollywood's original power couple released a new book, "Kirk and Anne: Letters of Love, Laughter and a Lifetime in Hollywood," that revealed intimate letters they shared through the years. They communicate through emails due to a stroke Kirk suffered in 1996 that impacted his speech.

In the book, Anne, 98, admitted that her husband had other lovers -- and she was aware of it and willfully turned a blind eye.

"I told him right from the start that I needed to hear from him directly if he was having or had had a fling. And since he can't keep a secret, he always has -- none of them serious and usually when he was lonely and on location without me," Anne wrote in an email to FOX News.

The German-born actress also added that her unconventional response to Kirk's cheating was due to her upbringing:

"European women are less likely to run to the divorce court in righteous indignation than Americans are. I loved my husband and my life and our family, so why would I give all that up because of pride? We are together because we love and respect each other and share the same values."

28 PHOTOS
Kirk and Anne Douglas through the years
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Kirk and Anne Douglas through the years
WARSAW, POLAND - 1 APRIL 1966: A visit of the American actor Kirk Douglas to Warsaw, Poland, on 1st April 1966. Pictured: Kirk Douglas and his wife Anne Buydens at the Warsaw airport. (Photo by Wojtek Laski/East News/Getty Images)
Film actor Kirk Douglas and his wife Anne pose for photographers as they arrive at Tempelhof airport in Berlin, 02 February 1964, for the promotion of his film 'Seven Days in May'. Douglas born in Amsterdam, New York, made his Broadway debut in 1941, served in the US Navy and embarked on a screen career in 1946. His films include Champion (1949), The bad and the Beautiful (1952), Lust for Life (1956), and Spartacus (1960). From the 1970s Douglas also worked as director. / AFP / DPA / - (Photo credit should read -/AFP/Getty Images)
BEVERLY HILLS, CA - MARCH 1: Kirk Douglas and wife Anne Buydens attend Sixth American Film Institute Lifetime Achievement Awards Honoring Henry Fonda on March 1, 1978 at the Beverly Hilton Hotel in Beverly Hills, California. (Photo by Ron Galella, Ltd./WireImage)
FRANCE - SEPTEMBER 09: Americain Film Festival.Kirk Douglas And His Wife Anne In Deauville, France On September 09, 1978 (Photo by Laurent MAOUS/Gamma-Rapho via Getty Images)
Kirk Douglas and wife Anne Douglas during Friars' Club Salute to Johnny Carson as 'Entertainer of the Year' 1979 at The Waldorf-Astoria Hotel in New York, New York, United States. (Photo by Ron Galella/WireImage)
21st May 1962: American actor Kirk Douglas and his wife Anne at the eighth annual Share Inc 'Boomtown Party' where sizable funds were raised for the 'Exceptional Children's Foundation'. (Photo by Nat Dallinger/Keystone/Getty Images)
LONDON, ENGLAND: Film actor Kirk Douglas and his wife Anne pose for photographers at the London airport, 18 August 1958. Douglas born in Amsterdam, Netherlands, made his Broadway debut in 1941, served in the US Navy and embarked on a screen career in 1946. His films include Champion (1949), The bad and the Beautiful (1952), Lust for Life (1956)j, and Spartacus (1960). From the 1970s Douglas also worked as director. (Photo credit should read AFP/AFP/Getty Images)
Kirk Douglas is embraced by his wife, Anne, in his dressing room after his opening performance in One Flew Over the Cuckoo's Nest at the Cort Theater November 13th. Douglas returned to Broadway stage after 17 years of movie stardom.
5th December 1960: Kirk Douglas and his wife Anne Budyens arriving in London for the premiere of his new film, 'Spartacus'. (Photo by Dennis Oulds/Central Press/Getty Images)
(GERMANY OUT) Douglas, Kirk *09.12.1916- (Eigentlich Issur Danielowitsch Demsky) Schauspieler, USA - mit seiner Frau Anne Buydens und seinen Kindern - undatiert (Photo by ullstein bild/ullstein bild via Getty Images)
LOS ANGELES - CIRCA 1967: Actor Kirk Douglas and his wife Anne Buydens arrive for a party in Los Angeles, California. (Photo by Earl Leaf/Michael Ochs Archives/Getty Images)
FRANCE - SEPTEMBER 09: Americain Film Festival.Kirk Douglas And His Wife Anne In Deauville, France On September 09, 1978 (Photo by Laurent MAOUS/Gamma-Rapho via Getty Images)
NEW YORK CITY - OCTOBER 27: Kirk Douglas and wife Anne Douglas sighted on October 27, 1981 at Elaine's Restaurant in New York City. (Photo by Ron Galella, Ltd./WireImage)
Kirk Douglas and Anne Douglas during 30th Anniversary of the Joffery Ballet at Dorothy Chandler Pavilion in Los Angeles, California, United States. (Photo by Ron Galella/WireImage)
Kirk Douglas and Anne Douglas during 57th Annual Academy Awards at Dorothy Chandler Pavilion in Los Angeles, California, United States. (Photo by Ron Galella/WireImage)
Anne Douglas and Kirk Douglas (Photo by Ron Galella/WireImage)
Kirk Douglas and Anne Douglas during 43rd Annual Writers Guild of America Awards at Beverly Hilton Hotel in Beverly Hills, California, United States. (Photo by Jim Smeal/WireImage)
Kirk Douglas and Anne Douglas during Share Boomtown Party at Santa Monica Civic Center in Santa Monica, California, United States. (Photo by Ron Galella, Ltd./WireImage)
Kirk Douglas and Anne Douglas during 8th Annual American Cinema Awards at Beverly Hilton Hotel in Beverly Hills, California, United States. (Photo by Jim Smeal/WireImage)
370031 02: Kirk Douglas, right, accompanied by his wife Anne, waves to the press while attending the dedication of Kirk Douglas High School May 24, 2000 in Northridge, CA. (Photo by Jason Kirk/Online USA)
LOS ANGELES, UNITED STATES: LAX41-20000329-LOS ANGELES, CA, UNITED STATES: Actor Kirk Douglas and his wife Anne arrive at Cedars-Sinai Medical Center's annual fundraising gala to benefit breast cancer research 28 March 2000 in Los Angeles. US First Lady Hillary Rodham Clinton received the organization's Women of Courage award. (ELECTRONIC IMAGE) AFP PHOTO Jim RUYMEN/jr (Photo credit should read JIM RUYMEN/AFP/Getty Images)
(Original Caption) Kirk and Anne Douglas arrive. (Photo by Jody Cortes/Sygma/Sygma via Getty Images)
Philanthropist Anne Buydens and her husband, actor and Kennedy Center Honors Awards recipient Kirk Douglas, with their son Eric, arrive at the North Portico of the White House to attend a reception, Washington DC, December 4, 1994. (Photo by Mark Reinstein/Getty Images)
51. Berlinale : Champagnerempfang F�r Kirk + Anne Douglas (Photo by Franziska Krug/Getty Images)
LOS ANGELES, CA - SEPTEMBER 19: Actor Kirk Douglas and wife Anne attend the official dedication of the Los Angeles Mission's new Urban Training Institutute on September 19, 2002 in Los Angeles, California. (Photo by Frazer Harrison/Getty Images)
Anne & Kirk Douglas at the Hollywood Foreign Press Association Luncheon to benefit Hollywood non-profit organizations and film schools, held at the Beverly Hills Hotel on Monday, August 19, 2002. (Photo by Kevin Winter/Getty Images).
Kirk Douglas (R) and wife Anne Douglas during It Runs in the Family New York Premiere - Outside Arrivals at Loews Lincoln Square in New York City, New York, United States. (Photo by Jim Spellman/WireImage)
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The longtime couple also dropped another bombshell -- Anne saved Kirk's life twice.

The first time was when she refused to let him get on a private plane in 1958 with director and close pal Mike Todd, who was then married to Elizabeth Taylor. The plane crashed over New Mexico and killed everyone on board.

The second time, Kirk said she drove him to the hospital "in record time" when he suffered his stroke "and then gave me tough love to bring me out of my suicidal depression afterward."

Kirk and Anne's love story is straight out of a movie -- they first met in Paris in the early 1950s while he was on location for an upcoming film. The first time he asked her out, she said no!

"I had been a big movie star with two Oscar nominations by the time I met Anne, and I believed that any woman would be flattered if I asked her out," he recalled. "Anne was the one who turned me down."

But there was a reason for Anne's cautiousness ...

"Of course, he was charming and sexy, but I had seen too many young women in Paris fall in love with American movie stars who went home to their lives and wives when their pictures wrapped," she explained. "I certainly didn't want to be another location romance casualty. I had survived war in occupied Paris, and knew instinctively how to protect myself from dangerous situations."

RELATED: Kirk's actor son, Michael:

17 PHOTOS
Michael Douglas and son Cameron Douglas
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Michael Douglas and son Cameron Douglas
©2002 RAMEY PHOTO AGENCY EXCLUSIVE!!! New York 03/28/02 Michael Douglas & son Cameron Douglas pose after filming ' Smack In the Kisser', in Canal Street, Downtown Manhattan. 3-28-02 PG (Photo by Philip Ramey/Corbis via Getty Images)
404806 04: Actor Michael Douglas (R) and his son Cameron Douglas arrive at the Conde Nast Traveler Hot List party at the W Hotel May 1, 2002 in New York City. (Photo by Mark Mainz/Getty Images)
Kirk Douglas, Anne Douglas, Diandra Douglas, Cameron Douglas, and Michael Douglas (Photo by Ron Galella, Ltd./WireImage)
Michael Douglas, Cameron Douglas, and Diandra Douglas (Photo by Ron Galella/WireImage)
Michael & Cameron Douglas during Holyfield v. Tyson II in Las Vegas, Nevada, United States. (Photo by Jeff Kravitz/FilmMagic, Inc)
UNITED STATES - MAY 26: Diana Douglas Darrid with her grandson Cameron Douglas (l.) and her son Michael Douglas (r.) attending book party for Darrid's 'In The Wings: A Memoir' at Sardi's. (Photo by Richard Corkery/NY Daily News Archive via Getty Images)
UNITED STATES - MARCH 15: Actors Lou Gossett Jr., Michael Douglas and son Cameron Douglas (l. to r.) watch as the New Jersey Nets defeat the Miami Heat, 97-78, at the Continental Airlines Arena. (Photo by Howard Earl Simmons/NY Daily News Archive via Getty Images)
Michael Douglas, mother, and son Cameron Douglas (Photo by Jim Smeal/WireImage)
NEW YORK - DECEMBER 17: (ITALY OUT) Cameron, Kirk and Michael Douglas stand in front of Cipriani's Restaurant December 17, 2002 in New York City, New York. (Photo by Arnaldo Magnani/Getty Images)
LOS ANGELES - APRIL 7: Actor/producer Michael Douglas (L) and son actor Cameron Douglas arrive at the premiere of 'It Runs In The Family' at the Bruin Theater on April 7, 2003 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
NEW YORK - APRIL 13: (U.S. TABS & HOLLYWOOD REPORTER OUT) (L to R) Diana Douglas, Kirk Douglas, Michael Douglas and Cameron Douglas arrive at the New York premiere of 'It Runs In The Family' at the Loews Lincoln Square Theater April 13, 2003 in New York City. (Photo by Scott Gries/Getty Images)
Cameron Douglas and Michael Douglas (Photo by Mark Sullivan/WireImage)
PROVIDENCIALES TURKS AND CAICOS ISLANDS, BWI- JANUARY 05: ***PREMIUM PRICING;USAGE IN POSITIVE STORY ONLY;GETTY IMAGES EXCLUSIVE;TABLOIDS OUT*** Actor Michael Douglas, actress Catherine Zeta-Jones with Cameron Douglas and his girlfirend Kelly Sotton Dellis Cay on Turk and Caicos while on holiday in the Caribean January 5, 2007 in Providenciales Turks and Caicos Islands. (Photo by Frazer Harrison/Getty Images).
CULVER CITY, CA - MARCH 06: Cameron Douglas, actor Michael Douglas and actress Catherine Zeta-Jones attend Kirk Douglas' one man show 'Before I Forget' at The Kirk Douglas Theatre on March 6, 2009 in Culver City, California. (Photo by Jason LaVeris/FilmMagic)
April 27, 2009 Hollywood, Ca.; Cameron Douglas and Michael Douglas; 'Ghosts of Girlfriends Past' World Premiere; Held at Grauman's Chinese Theatre (Photo by Gregg DeGuire/FilmMagic)
Actor Michael Douglas and Cameron Douglas attend a performance of Hairspray on October 23, 2002 at the Neil Simon Theater in New York City. (Photo by Ron Galella, Ltd./WireImage)
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Well it seems like Kirk managed to win her over, and they began a lifetime of writing love letters to each other. Thankfully, Anne saved all of them.

And despite their ups and downs, Kirk and Anne have built a beautiful life together, which includes their three children, Peter, Eric and Michael. Kirk has one child, Joel, from his previous marriage to Diana Douglas.

Kirk and Anne revealed their simple secret to such a long marriage:

"[Date night is] the same as it's been throughout our marriage," Kirk said. "We spend what we call the 'golden hour' together at around 6:30 each night. We'll sit and talk and laugh and share our day and our thoughts with each other."

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