Your husband is blatantly emotionally abusive and seems to get pleasure from being intentionally cruel to you (rolling eyes, sitting far away from you, telling he doesn't want you) and he's not even discreet about it in front of your children.

GO DARK.

VERY dark.

Do not call him or anything.

As for the OW, I suspect something is going on there. If she wanted him to try on his M so hard, she wouldn't let him sleep over.

I know if I had an old friend who was going through M problems and they asked to stay over I would tell them flat-out, I care about yo uand am sorry but am not getting involved. Go home to your wife.

But that's neither here nor there.

GO DARK. DO NOT initiate contact unless it's about your children.

I want to give you a huge hug after reading that. It must be so hard to keep a straight face when he's talking to you but please try. Do not beg him for anything.