I've been lurking a bit and I see some actions that your not doing that may help. You feel like since your being in the same room, watching TV with him, not having the EA that he should be grateful. Your dealing with a 26 man who has sexual needs, so you can sit right next to him all you want but it won't eleviate his problems at all. I'm not saying jump on the guy or nothing, but he needs to be made to feel like a guy. The flip side, since he does't feel like a man, he pouts around like a little boy, bo ho I get none. How can you respect that? I don't blame you that you don't.
So maybe try at the bottom of the sexual ladder and take each rung as it goes. Compliment something about him, little flirting here and there, build it up slowly and train this guy to realize that every little whisper, rear slap or whatever isn't going to lead to sex, but it will get there.
Also agree with Sandi on the EA, how can you two grow if he keeps using it as a weapon. It's a tool you two should learn from and not throw around talk about it lightly.