Yes, don't fake it, ever! Enjoy each sexual experience for what it is! The advice you have been given above contains some excellent suggestions.
As a man, I have found that very few women experience orgasm during intercourse. In the movies, of course, women have a "big O" everytime they have sex, always accompanied by incredible noises, loud moaning and thrashing about as they ready to climax. Basically, I (and my partner) am stlll waiting for such a movie-like experience. Some women get this somewhat false idea that they should orgasm during sex for it to be successful.
Personally, I do not expect a woman to orgasm. It's great for both of us when it happens. My male friends and I all feel the same way. From the male's perspective, the sexual encounter would not be considered a failure if her climax did not occur. However my friends and I agree: should the woman be caught faking it, we would be disappointed and annoyed. Not a good way to end the otherwise great encounter.