Most Helpful Guy
Accept that you did these things in the midst of an extremely emotional and confusing period of time, and let it be the past. Learn from it, use it to become a better person in the future, and let it go.
Hanging on to it won't do you any good, you can't go back and change anything, so let it go. Drop it. Take the backpack full of regrets or embarrassment and move on.
He wasn't innocent either, and I think that you probably reacted how a lot of people going through that experience would have. Not saying it's right or wrong, but you're probably not that crazy given the circumstances.
Even if you're remembered (by him) as the crazy ex-girlfriend, he's still the asshole boyfriend who cheated on his girlfriend, so don't beat yourself up too much.
And please, don't feel like all guys are going to be like him, either.
Most Helpful Girl
Stop caring. Ignore him, forget about him... we've all done crazy stupid stuff when in love. Love doesn't have to be sane, how boring would that be? You learned your lesson and now you know you shouldn't do that... that's good! People aren't born perfect, we just have to fight to be a little bit better as we grow. Don't talk to him anymore but don't avoid him either, just learn to simply not care about him. I know it's easier said than done - I am currently in love with my ex and I struggle every day not to contact him because I know that's what's best for both of us... but you know? It really does get easier every day and I know that with time, I'll forget about him and so will you. So be strong, stop thinking about the past, and learn to love your mistakes because they will make you be who you really want to be.