I was reading your post and it was like I was reading my own writing. Your situation is exactly like mine. I began posting here early on , but mainly have been just reading posts.
My H of 18 years moved out in Jan . He says he had lost something for me and if he didnt move out he didnt think it would get better. We have S16 and S9. H lives down the street and since leaving has been around alot. He was in EA with OW from work. We started MC a month ago and he seems to be backing away from EA but hasnt actually told her. He says he wants to come back home but hasnt made the move. I see him everynight just about, we are talking about vacation for the summer and planning things but he just isnt packing yet. I think its because he wants to gradually back away from EA as I believe the OW has more emotionally invested in the R and he doesnt want it to affect his job. Might be wishful thinking on my part.
Anyway my positives are the same as yours and lately I have totally backed off asking him his plans. I think he sees it as my ready to "move on" if neccessary. Just cant figure why he wont make the move... must be a guy thing