((((((((BA)))))))) I'm sorry to hear about your friend. I hope things go well on your trip "home".
I think that it is important for you to figure out who you are. Because that's who is going to get you through this, all of it. Oh, you may be kinda lost, he's way past that!
I think it would be better if you let stuff with MOW lie, rather than confront him. You know, he knows you know, talking to him about it isn't changing anything. As far as I can see, the only reason to bring her up again is if you are planning on drawing a line in the sand, and I don't think you have any intention of doing that. Even talking about her give her too much space in your head. And, I think you have had enough R talks with your H for a while. Now you know he knows how you feel. Any more talk is pressure, and everything moves away from pressure. Especially MLCers.