Rachel Bilson was scared to film sex scenes with Zach Braff in her new movie.
The brunette - best known for her role as ditzy Summer Roberts in 'The O.C.' - gets up close and personal with the 'Scrubs' actor in 'The Last Kiss', a remake of an Italian film.
Rachel claims it was "awkward" shooting the raunchy scenes because she and Zach didn't know each other very well.
She revealed to Cosmopolitan magazine: "I was really nervous because this was my first big sex scene. I play a temptress who pursues Zach's character. It was a little awkward, it was like, 'Hello, nice to meet you, let's get into bed.'"
The 25-year-old actress also refused to strip off for the sexy scenes - because she was afraid she would lose credibility as a serious movie actress.
She said: "The filmmakers wanted me to take everything off but I wasn't interested in doing that for my first role. They agreed in the end and there was no nudity, nothing too raunchy."