separation and divorce are rarely fun and or easy. it's very possible that he does feel more than he wants to admit.
you have to take stock ... he already said he ISN'T seeking that route. You are his lover, and either you'll have to spend the rest of your relationship with him convincing yourself you're OK with that, or ... well you know.
maybe he is falling harder, but if you really want to be his one and only, he needs to at least begin talking about the process of detangling his life with her.
He has already told you what to expect. Unless he says something different, you shouldn't read into it. Hoping things will change is what keeps the affair partner in these relationships for years and years. It normally ends in a waste of time.
Hmmmmm ... I wonder if he says "I miss you and wishes he was with you," to his wife when he is out of town with you?
Run a mile ...
NO! I don't like the sound of this at all. I'm a 46 year old man. Trust me, this guy is using you. Get away from him and the sooner the better.
Probably not. Next question?
You need to talk to him about this .. there's no way we can answer it.