Hi again. His withdrawal from you has nothing to do with you even though to a healthy person it feels that way. He is mentally ill. He is retreating because of his disorder. This is a part of the disorder that is so painful to the other person. My guy has done this now for a year and a half. I'm partly to blame because I kept taking him back. He has decided now to end our relationship for good. We were together in October and every thing was fine. Not perfect, but loving. The last week in October he got strange and told me that he doesn't feel the same about me and does not want to see me, is trying to get over me, and on with his life. He tried to make me jealous by saying other woman are in to him. He's gone on wild spending sprees and is drinking heavily. He's never done any of this before. It hurts like the dickens, but I have to realize I don't want to spend my life like this. I have befriended another woman on this site and she props me up emotionally and has been a great help. Don't sell yourself short. Bipolar men can be very hurtful. Their massive egos get in the way of their problem and they don't take care of themselves. It is everyone elses fault. My guy was a gem of a man for almost 2 years before he revealed himself. I understand what you mean about no closure, as I too got nothing. But please understand, you will never get closure from something or someone so irrational.
I hope this helps a little. I'm sorry to be so direct, but maybe it will give you the nudge you need to make a good choice for yourself. Always pick you first. Take care. Good luck.