An ex of mine tried to use my mental illness as an excuse for his mental issues. At first he said our relationship was different because we were different. When he gave me the "let's just be friends" speech I told him why I though he did that. When I pointed out his distorted thinking he immediatly told me I should worry about my diagnosis and not try to diagnos him. Of course we didn't end up as friends, in fact, we haven't communicated in almost two years.

I agree that couples counseling would be something to think about.