AJ, you and everyone else are helping in some way or another. Plus, I appreciate your random humor. It talks me down.
I don't have answers to your q's. I'm clearly still struggling with it. Except I can tell you the reason I didn't leave H when the EA happened is the same as now - S12. Besides, is an EA really any more problematic than my H telling me I need to give him maintenance sex? It all blurs together. It's hard to see the forest for the many, many trees sometimes.
Oh, and I can tell you why he hasn't left. Two reasons: he doesn't have the list of complaints against me that I have against him, and he doesn't want to be divorced again because that really screws with his mental image of himself.