Can you tell me if you're ready to set a firm boundary in regards to his extramarital, hopefully only emotional affair? If you are, him engaging in it further really leaves you with two reactions: divorce or separation. If you aren't there, and I'm assuming you aren't, then the best course would be to look out for yourself first in every way possible, detach from him emotionally, and go GAL. Simple but hard. Your H is loving attention from multiple women. Why? B/c he just felt like a player, so cool, so attractive. On some level, she is meeting one of his emotional needs. If and when you start to pull away and stop pursuing him, he will try to get you back in line. So be prepared. Read other people's sitches. It's all a fairly predictable cycle.
I'm very sorry to see you're here, but keep posting and we'll tell you what we think. We've been through this. And remember, nothing needs an immediate answer. Nothing. You can always post a question here before responding to him.
H 34 W 29 BD 3/12/18 Divorce Busted Spring 19
It is not things that bother us, but the stories we tell ourselves about things.