Hey SpaghettiLegs, I'm kind of in a "stuck" position too, so understand that not all options are always on the table.

If you think you might be codependent, 'Codependent No More' is a good read. Codependency isn't just for alcoholics (which it sounds like you know). In the beginning of the book, she talks about people who heal and thrive, despite living with a disordered person. That was a lot of hope for me, since I needed to heal where I was. Detaching and boundary setting, and other skills taught in codependency have given me back some sense of myself, and improved things a great deal. That's not to say that every day is going to be good, but you can learn to take care of and nurture yourself, and maybe even enjoy yourself, despite living with someone like him. There is hope.

I feel for you.