My life is coming back!

Why do so many bad things happen to me. I am getting obsessed with the one person who treated me the worst again. I can not take it anymore. He just makes me want to cry. UGGH! I want him to leave FOREVER! Why can't he do that? I need help. I need to be obseessed with someone who will be nice to me back. I wanted to avoid him. I forgot about him. Than I saw him!