Replying to Getting way too hung up on a girl

I dated a girl for almost two years until this last summer, and she cheated on me. ever since then I just cant stop thinking about her, and its fucked up because I hate her but I still have feelings for her. I can't seem to meet any women, ive basically forgotten to how to be single. I mean, I've gotten laid a few times, but every time i do im just like, meh, what was the point. I'm not necessarily depressed, but I just feel like there's something missing from my life. Other than ski alot, how should i deal with this NS?

TLDR: Fuck Bitches, man