GF, PLEASEquit doing his laundry. Give him what he asks for: NOTHING FROM YOU. Let him see what this is like in reality. Given all the very long posts you've made tonight I don't see how giving it a try can make things any worse.
As for being a SAHM. I was one for 11 years. Our problems escalated when I went back to work so please don't let your H think you getting a job will solve everything. (Although I thought I'd read that you did go out to work as well). IF money becomes an issue there are lots of things you can do from home. Maybe you should start looking into them even if you stay with H. At least then he can't say you don't contribute!
I'm really worried about you as your H sounds so abusive. Please take care.
Me 43 XH 45 M 2.7.88 Divorce 7.10.09 Kids D20,S17 & D15