Me too!
And Good point about him being mentally ill. It's so hard to be in a relationship and want to help someone but to recognize that they're hurting you in the process.
I had an ex who threatened suicide 11 times before I finally broke it off with him. I know he meant it and he did it out of desparation, and I desparately wanted to help him - but I couldn't, and he wouldn't accept the professional help I found for him. There's just a point when you have to walk away.