I love both the books and the film. Yes, I am a teenage girl, but not raving to the point of some.
The books I love because of the interaction between Edward and Bella. The way he sort of teases her and just generally the way they act. It appeals to my romantic side (which is a large part of me)
The film was fairly true to the book. Not as much interaction of the type that I like, but it was very intense. I liked that emotional depth that it conveyed.