[Dark-and-Twisty]

I can see where you're coming from, but as a girl whose best friend is a guy whom I'll never be more than friends with, I can see your boyfriend's perspective too.

The question comes down to trust. You've got to trust him. The truth of the matter is, guys and girls can be just friends. If he's truly faithful, then he won't do anything with her. If he does do something with her, then he obviously doesn't care about you and you should get rid of him asap. Like I said, it all boils down to trust. He should be able to live with her and have your trust, in my honest opinion.