Emily Atack has alleged a former colleague once exposed himself to her, and pressured her for sex in a hotel room.
The 29-year-old actress has said she was at a wrap party for an unnamed "project" when the unknown man - whom she calls Dave - made his alleged advances.
She said: "I was drunk. I wasn't single. I was with someone at the time, so I had no intention of doing anything with anybody."
The 'I'm A Celebrity... Get Me Out of Here!' star claims she was with a group of friends when they ran out of wine, and one of them gave her a key to their hotel room and told her there was a mini fridge of booze in their room.
But when she went in, she alleges the fridge was empty, and claims she was lured into the room so Dave could make his move.
She added: "And all of a sudden I turned round and Dave is standing there, in the room with his d**k out. I froze. I remember saying, drunkenly, 'No', but I didn't have a clue what to do."
Dave allegedly refused to let go, so Emily says she kissed him out of desperation.
She said: "He let me leave and the next day I cried my eyes out all day."
The 'Inbetweeners' star now says she would "kick him in the balls" if she was ever in the same situation again, but at the time, she just went with her "instincts".
Writing in her new book, 'Are We There Yet?: To indignity . . . and Beyond!', she said: "I'd love to say that with age, courage and experience, if it happened now, I'd kick him in the balls. [But] when you're drunk, in a room with a man who holds more power than you, instinct takes over, to get you the hell out of there."
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