I was thinking about how to explain this better, and I think this is it.
Boundaries, as you have stated, aren't to control behavior of others, but to protect us. Because I had accepted that he had been sleeping around, and since that is all out on the table, my biggest problem with him is that I don't trust him. If he wants me to try an R with him, he needs to build trust. I'm not freaking out that he is out sleeping with other people. I'm more shocked by the proof that he isn't, haha. If this changes and it starts effecting me negatively, I will deal with that then. That's the day by day thing I'm doing.
Like I said, I was planning on letting him move back in for financial and logistic reasons. He had begun to treat me respectfully and was helping with the kids, etc. This whole R thing, well...time will tell. I'm kind of the WAS at this stage.
M: 9 yrs T: 13 yrs H:34 Me:35, S4, D2, S 7 months Dday 11/12-PA & multiple PAs Dbing 12/12 S 1/13 7/13 H moved back in basement. 8/13 #3 born 10/13 still cheating 10/13 He moves across country, I file for D