I am trying to find out the name of one of those late night movies from Cinemax in the 80's. The main girl in the film was supposedly an actress in a film that was being shot. While they were shooting a scene with her and her costar, the two of them lose control and start actually having sex while the cameras are rolling, shocking everyone on the set. Her husband or boyfriend is shocked, she is ashamed... the movie ends with a big orgy scene. Lead actress was blonde, I think. It didn't get repeated a lot, like Young Lady Chatterly did. Anyone remember the title?