DayAtATime1 - I'd take a physical illness over mental illness any day. With PI, it's often time visible and there's a clear cut path toward treatment. The brain is complex.
Any number of factors could be responsible for the MI.

Adam_k, he's a wonderful guy and husband. He has his flaws and vices just like the rest of us, but he's kind and supportive. But I just find myself withdrawn, not attracted to him, and resentful that I chose to get married over doing something else - anything else. And it's not even his fault. But it's hard to separate reality from my mental illness. Which one is doing the talking? Maybe I just truly don't love him - that happens all the time. I tried therapy for a month about 6 years ago, but otherwise I don't talk about my problems to anyone. My family is partly responsible for my MI from the physical abuse they inflicted upon me as a child so I don't talk to them about anything personal - good or bad. I don't want them to know anything about me. As for friends, I don't have any really. Just acquaintances, but as with family, I just don't reveal much.