Hang in there, TD. It sounds so similar to my situation with H and unfortunately I don't have good advice --- I don't know what will happen with us either. H also seems mentally checked out, shut down, and withdrawn. He's depressed and struggling and I want to be there for him, but he doesn't want me. I have to give him space.
How are things going with GAL? I'm thinking of doing some small home improvement projects but I don't know if that will be perceived as needy?