AceShowbiz - George Clooney felt nervous filming sex scenes for his new movie "The American" because he isn't "that experienced" when it comes to stripping off onscreen, according to his co-star Violante Placido.

The actress plays Clooney's love interest in the film, which tells the story of an assassin who takes a break from hitman duties to spend time in a quiet Italian village. The pair plays lovers in the picture, and Placido admits her co-star felt apprehensive about shooting the saucy bedroom scenes.

She tells People.com, "He confessed... that he didn't do lots of sex scenes. I felt like this was in a way something new to him, he wasn't that experienced. We had to find a way to make it natural and let your body speak somehow. We were very open to one another to try and make it work. We just said 'Let's trust each other' and we did. I felt like we had to let ourselves go. It had to look real."