Did she change me, or did I change myself?

Both of you admittedly had faults as the way your story goes. As a man, your ego has been hit and that hurt you and made you change. She on the other hand did some stuff to make you realize things and that you did only now both of you are messed up. I do believe that if both of you truly love one another, you'll patch things up and love each other still inspite of the mistakes-- and this time if ever it is unconditional. Goodluck.