These people are amazing at the mind games they play, the damage they leave. Its never their fault. They cheated because of something we did.
You said it right peiper, mind games. One of the things that was reinforced for me yesterday was the amount of energy I have to expend to fight through her mind games. She's so good that I could and actually have taken responsibility for things that I shouldn't or worse feel guilty for being upset about something she did. For example, she told me that she has no interest in these other guys and that she contacted them sheerly out of boredom.

I'm ashamed to say that for a few seconds I was ready to believe and forgive her. Luckily I came to my senses quite quickly.