I haven't had a serious relationship since I broke up with my ex about a year ago. We dated for two years, and after I broke up with him, he was so angry about it that he decided to tell my very conservative parents some unnecessary details about my life (I have a tattoo, I drink on occasion, we had sex, etc.) To this day, my relationship with my family is still strained because of him.
But I rarely think about him. If I did, I would be constantly and angry and upset. He just doesn't exist to me anymore, and he honestly never even crosses my mind. I know I'm the best thing that will ever happen to him, and life will catch up with him for what he did to me. That's all the peace I need.