A trashy new book has claimed that Hollywood icons Marlon Brando and James Dean had a sadistic gay relationship.

Authors Darwin Porter and Danforth Prince make the claim about the two Hollywood legends in new book ‘James Dean: Tomorrow Never Comes’.

The book quotes a friend of Dean’s, Stanley Taggart, who claims that the pair were involved in kiny sado-masochistic sex – with Brando as the ‘dominant’ partner and Dean the ‘submissive’.

He apparently claims that Brando would play ‘twisted mind games’ with the young star – making him watch as he had sex with strangers.

Haggart claimed: “I got the impression that Jimmy was engaged in a cat-and-mouse affair with Brando, with Brando being the cat, of course.

“Brando seemed to be toying with Jimmy for his own amusement. I think Brando was sadistically using Jimmy, who followed him around like a lovesick puppy with his tongue wagging.”

However, the authors have a record of unsubstantiated gossip.

A source told Queerty: “They’re unburdened by facts. They just make up stuff and there are idiots who fall for it.”

It’s not the first claim about James Dean’s sex life.

A former Hollywood starlet previously revealed that actress Elizabeth Taylor made a bet with closeted gay actor Rock Hudson about which one of them could seduce James Dean, while working together on the film ‘Giant’.

Noreen Nash recalled: “Elizabeth and Rock took bets on who could get James Dean into bed first. I had an idea Rock would win but Elizabeth wasn’t so sure. James was troubled but gorgeous.”

She claimed that Ms Taylor lost her bet just days later.

James Dean died in a car accident in 1955. Marlon Brando died in 2004.