Relationships and Marriage Forum - child of alcoholic father and possibly bipolar

My husband recently left me. I mean literally just up and left and packed his bags while I was at work. It's been over 6 weeks since this happened, and it happened just short of our 6 month anniversary.

I've known him for 8 years, and dated for almost 5 years until finally getting married. The thing is, I think he is also is exhibiting symptoms of bipolar disorder which runs in his family but is undiagnosed. His brother and my sister-n-law tried to warn me but when I addressed it he would always deny it and act like everything was fine.

Before he left, he kept saying to me that he had to take care of everybody and he was getting tired of it. I didn't know what he was talking about or why he was feeling like he did. It wasn't making any sense and his thought process seemed erratic.

I found a few days after he left that he cheated on me and he was signing a lease with this woman. In the minimal times I've spoken with him he said that he wasn't moving in with her but then how do I know that wasn't or isn't a lie? I don't know anymore what were lies and what was the truth.

He will only communicate with me over email. His emails are so different from the last, the first was angry that everyone was making themselves as the victim from him leaving me rather than him. It was that first email that he told me to ask my psychologist (I started seeing one after he left because it was so unexpected) about children of alcoholic families and the relationships and roles that developed. So I did and I have been trying to learn as much as I can on Adult Children of Alcoholism and about bipolar disorder. He has stopped talking to his immediate family and his friends. From what I understand, I am the only one he will even email. He keeps telling me that his brother and sister-n-law have abandoned him (even though he's the one refusing to talk to them) and that his parents are in denial. He is the eldest child of an alcoholic family, his father is alcoholic and also suffers from depression but medicates it with alcohol.

How do I talk to him? He's my husband. Something tells me he just wants me to wash my hands of this but I still want to help him get help. As I read about adult children of alcoholism, and about bipolar disorder, everything seems to tie in now. Right now, this isn't the man I married. How do I get through to him? He says he's seeing a psychiatrist now but....I'm at a loss. Because he just up and left with no explanation, I find myself trying to fill in the blanks....do I just walk away? Do I stay and try to fight for my marriage? He seems confused as to why has reacted the way they have to him leaving me.

He seems angry at everybody. From what I have been reading it seems like he is exhibiting some of the traits of ACOA but he also exhibit traits of bipolar disorder. How can I reach out to him where I'll get through? Especially if he'll only communicate over email? It's almost like he forgot that we got married. When I married him, I meant my vows, for better or worse....how do I do this over email?