>Then She cheated on me once, I forgave her. We moved on.

There was your mistake. If she's the kind of person to cheat once, she's the kind who will cheat multiple times. I would never forgive my girlfriend for cheating on me, no matter the circumstances. I would hold her to the same high standard of conduct to which I hold myself. And in any case, if she's fucking around with some other guy, she obviously doesn't need me anymore.

I had a girlfriend up until a year ago; we had been off and on for several years since college. We broke up last year, mainly because our personalities clash so badly and we fight a lot more than is probably healthy. Also, she never told her parents about me, because there's a big ethnic/religious divide bewteen her family and mine and while she didn't care about that, her traditional folks wouldn't approve. We had a good time together (sometimes) but it was never going anywhere in the first place, so I have no regrets.