Just wanted to congratulate you with taking the first step towards improving your life. Well done!

And on a side note, you better toughen up and start being a man. You think life sucks? Why, because you can't live it without some cheating bitch by your side? There's more to it than that, believe me. Remember: every moment spent dwelling on the past is a moment you could be spending having a blast in the present with a new, better girl.
As for "seeing her hurt," allow me to recap:
"We just broke up tonight, the coles' notes version is that
she cheated on me with this person last year, and
she was still interested in him. Not interested as in wanted to date, but just curious about what he was up to. "