getting my ex back

So I'm just going to jump into this, my boyfriend of a year and a half broke up with me a week ago. We have been talking on and off and he does between wanting to be with me, and blocking me. Our relationship was good but we had problems. I was very controlling, past problems. And he was very bipolar, he still is. We flips between loving me and hating me and I don't know what to do. After being a part I realize that I did have a problem too and that I do truly love him. He said he doesn't want back but this has happened before and I'm wanting to know what a good way to get him back is. Any advice is welcome