[Dewie]

Staying friends with someone who you're romantically attracted to is a recipe for resentment (at least for many people). It might just be better to cut contact all together. Of course, then you might be in the uncomfortable position that people assume that you were only interested in her because you wanted to have sex with her and, 'failing' at that, you didn't want to have anything to do with her.

Ironically, it is when men aren't one-dimensional (which I think is must of us) that leads to these kind of situations, which leads to people thinking that they were just out after sex to begin with.