Well... you're not going to want to hear this, but I don't think you should get all wrapped around the sex thing. I mean, it's up to your Hopeful, obviously, but it is what it is.
Yes you had an agreement... but did you both have that, or did he agree to get you to back off? He has left the relationship and despite his confusion he's still out. The rules about no sex are a form of controlling him.
With that said my W and I have the same agreement. Do I think she's honoring it? I have no clue. Would it be a deal-breaker for me if she wasn't? No. No it would not. Would it hurt? Yes. But it would not be a deal-breaker because the woman that is currently inhabiting my W's body is not who I know to be my W. I wouldn't get back, long-term, with this person. I would need her to work on change eventually.
You're trying too hard to save your M and not saving yourself. Save yourself. Grow yourself. Focus on your life and your daughter's life, put your energy there. Your dumping all this energy into a black hole that just consumes it because he gets his needs met.
Cut him off. Live your life. He wants to be D... let him experience what it truly is like. So far he gets his freedom and a little on the side too. Pretty sweet deal from his perspective.
Married 6 together 8 Me:38 W:31 second marriage for both SS12, SD10, S6 Bomb: 9/8/11 (day before our 5 yr ann) W moved out: 2/18/12 D final: 11/12/12 Share S 50/50. Spend as much time as I can with SS & SD