Luisa Zissman was seeing a male stripper while in a relationship.
The 'Celebrity Big Brother' star, who is known for her raunchy antics, reportedly romanced Lotan Carter after watching him perform with stripping group The Dreamboys, while she was dating millionaire Andrew Collins.
According to The Sun newspaper, the 26-year-old beauty told Lotan: "I want to f*** you", before they started up a four-month affair, which came to a halt when the hunk found out she wasn't single.
Lotan, 25, adored the Apprentice runner-up and was said to be "furious" when he discovered she was with Andrew, an internet tycoon.
He said: "I worshipped the ground that girl walked on and there's nothing I wouldn't have done for her.
"But now I think she's poisonous. When a friend told me about her and Andrew -- after she went into Big Brother -- I phoned him. I wanted to know if I was being made a fool of.
"He confirmed what I needed to know. And he thought Luisa and I were just friends."
Lotan also claimed Luisa is "obsessed with money" and refused to commit to a serious relationship because he isn't as wealthy as she is.
He said: "She told me, 'I'd be with you forever if you won the lottery'. If Andrew ends up with her, more fool him."
Luisa is estranged from husband Oliver Zissman, who is the father of her three year old daughter Dixie, and she is said to have split with DJ Greg Burns before heading into the 'Big Brother' house.
The TV star has admitted to being bisexual and has been treated for a sex addiction in the past, after visiting sex parties in London.
A spokesman for the brunette beauty, who owns her own baking company, said: "She is wealthy in her own right and does not need a man for money.
"Luisa is having fun dating various men. Lotan was never her 'boyfriend' but they did go out a few times."
Andrew was unavailable to comment on whether Luisa had cheated on him during their relationship.
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