Marlon Brando's new biography paints 'The Godfather' actor in a new light, as it reveals how he slept his way around Hollywood. The biography also claims that he slept with some of his male directors and co-stars. The biography, 'Brandon Unzipped', by Darwin Porter claims that the bisexual Academy Award winner engaged in a sexual relationship with James Dean, Cary Grant, Montgomery Clift and Sir John Gielgud.  

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In the book, Porter says: "James Dean was one of Brando's most lasting yet troubled gay relationships. They had a relationship for a number of years but it was always turbulent. At one point they had a big stand-up fight at a party in Santa Monica, California, witnessed by dozens of people. His affair with Montgomery Clift was a long and enduring relationship."

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