Kristen Stewart says filming her two big sex scenes with boyfriend Robert Pattinson for the upcoming Twilight Saga: Breaking Dawn Part 1 movie was “surreal.”

“It was so weird, it didn’t even feel like we were doing a scene within a Twilight film. I was like, ‘Bella! What are you doing? Wow! What is happening here?!'” Stewart told People magazine. The sex scenes were so steamy that the MPAA originally gave the movie an R rating!

The movie is sure to put Stewart’s sex life in the spotlight. Stewart leads a pretty low-key lifestyle, and has yet to confirm or deny her relationship with hearthrob Pattinson. Maybe the on-screen chemistry in Breaking Dawn will finally give away K-Stew’s secret!