Yes, hang in there. I'm the LBS too, though I don't think H is having an affair. I got similar advice about making them be the one to move out of the bedroom or whatever, so my H is now in the guest room. Actually, after he did a week ago, I made the room more my room and hung some pics etc. While I feel lousy in general about the situation, taking back MY room it now actually feels like a safe place for me, it feels nice to be there.
I'm not sure about the joint counselling- but for you, get someone you can talk to 1:1. It can help a lot.
When the men on the chessboard Get up and tell you where to go; And you've just had some kind of mushroom And your mind is moving slow; Go ask Alice... I think she'll know.
