Not to be insensitive but I don't see much of a "nice guys finish last". You said yourself that she didn't give you much of a chance, so how does she even really know that you're a 'nice guy'? Sounds more like bad timing, and a lack of enough dates to me. Sure, given more time and frequent outings, you could be her current boyfriend, but I don't really see where she screwed you over that much. Aren''t you just out of high school? With young girls these days...consider yourself lucky...you got off easy...for now

JK