Upwards, I think you're doing great and your situation is still looking positive to me.

Here's my crazy guess on why you may still feel down despite H saying he's not going to contact OW- while contact was going on, your focus (besides on yourself) was on wanting him to end it. You wanted OW out of his life. Now that he's said he's ending contact for a while, I wonder if your feeling has changed to resentment that he even contacted her to begin with?

Maybe that makes no sense, but at least in my situation, I could see myself thinking that way???

Keep focusing on yourself and what you're doing!