Former U.S. president John F. Kennedy's wife Jacqueline had an affair with movie legend Marlon Brando the year after her husband was assassinated, according to a new book.

Brando is reported to have bedded the iconic socialite on two occasions in 1964. The Godfather star is said to have written about their romance in an early draft of his 1994 memoirs Songs My Mother Taught Me - but the revelations were edited out by a friend of JFK's widow prior to publication.

In a new book - titled Bobby and Jackie: A Love Story and containing details of an alleged affair between Jackie Kennedy and JFK's brother Robert - author C. David Heymann claims to have uncovered unpublished passages from Brando's autobiography.

The excerpts reportedly reveal Brando slept with Jackie Kennedy - aka Jackie Onassis - a year after her husband was murdered in Dallas, Texas in November 1963. The first time was allegedly after Brando and Kennedy enjoyed a three hour meal together.

According to New York Post gossip column PageSix, Heymann writes, "(The) meal included a good deal of drinking... Jackie and the actor danced and drank. During their dance, Jackie, deeply attracted to Brando, 'pressed her thighs' suggestively into his. They danced again, then sat down and began to 'make out'... In Brando's words, 'From all I'd read and heard about her, Jacqueline Kennedy seemed coquettish and sensual but not particularly sexual. If anything, I pictured her as more voyeur than player. But that wasn't the case. She kept waiting for me to try to get her into bed. When I failed to make a move, she took matters into her own hands and popped the magic question. 'Would you like to spend the night?' And I said, 'I thought you'd never ask.'"

A week later, the couple allegedly met up again at an apartment belonging to a friend of Brando's, and once again ended up in bed - but the romance then fizzled out.

Heymann adds: "Having twice consummated her relationship with Brando, Jackie showed no interest in pursuing him further."

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(This news article provided by World Entertainment News Network)