I would be very careful going forward and agree with AS in the thought that he will angle a separation to his advantage.
Also a separation for a year in some areas is necessary for a divorce to be granted without a waiting period.
Don't move out-whatever you do.
After speaking to a L, if H brings it up, say "Although this is not what I choose, I won't stand in the way if drawing up a separation agreement is what you need to do"
This way, the onus is on him to do it and he has to take the responsibility of the agreement. You can just say, when you've drawn it up with your counsel, I will have my lawyer take a look.
As for discussing whether the OW is to be outed, I really can't help you there. But since he denies it still, it would be fruitless and just make him "righteous" and angry, you know?
Saying that, check with your lawyer about adultery. It can have impact on your alimony payments, if you are entitled.
MC? MY H agreed to it, but then two weeks later said he would only go for closure of the marriage. A couple of weeks later he didn't want to go at all.
I think that it would not have helped at all at that point and may have hindered. He was long gone a year ago. (Not so much anymore, so there is always hope )
)