When I married my XAH I had my house put in both of our names. My attorney, who knows me very well, advised against it. But I loved him and never imagined that I would end up divorced. After the alcoholism became insane I had the attorney put it back in my name and my XAH signed it. He didn't ask me to do it in the first place, I had just wanted to. I am thankful that he signed it. He didn't care about my lovely place, all he cared about was alcohol. I can understand how you feel.
All I can think of is to go to an attorney that specializes in gay relationships. I'm sure that you are not the first with this problem and you will at least have an idea what your options are.