Ben Chaplin says he "lost his innocence" while shooting love scenes for his new film with Nicole Kidman.
He co-stars with Kidman in Birthday Girl which is due to be released in the summer.
Chaplin says he became a "sex scene veteran" after working on the film.
"In Birthday Girl, probably one-20th of the racy stuff we shot made it into the movie," Chaplin tells www.suntimes.com.
"Nicole is great. She's very used to love scenes. I'm not calling her easy, but she's done a lot of love scenes.
"She's very free. And if you're free and understand that it's just part of the job, then you can actually get creative with the sex scenes."
Chaplin says he hopes the footage that doesn't make it into the film will be included on its DVD.
"We could call it: Birthday Girl - Bigger, Longer, Uncut! The European Version," he said.