but it is hard to think that someone you cared so much for would fuck you over on purpose like that, and even be happy about it.
The things she said...where really mean.

I know the feeling. I was in a similar situation before with an ex gf. It can be amazing how different a person can be when you think you really "know" them. Also, words can really really hurt, to the point of making you hurt physically even. That really sucks that you got screwed out of money and treated like that. I don't know how anyone could ever do that to someone they consider a friend or even just an aquaintance. Very sad indeed.