Sophia Myles: 'Sex Is Easier Than Dancing'.... British actress Sophia Myles has no qualms about filming sex scenes - but insists on-screen dancing is her biggest fear.The Tristan and Isolde star admits having to display her footwork in front of co-star Jamie Bell in new movie Hallem Foe was a daunting task - seeing as Bell made his name in song and dance musical Billy Elliott.She says, "It's funny because the hardest scene to shoot in this film was one where I had to dance in front of Jamie."I actually lost sleep over that one. I was more worried about that than the rest of it because I don't have much confidence when it comes to breaking out moves on the dance floor. The idea of having to do it on celluloid and in front of the boy who was made famous as Billy Elliot was far more taxing than the sex scenes."