OK, so you're not ready to divorce or separate, that's fine. Take your space. You may need time to respond to things he says, don't allow yourself to be bullied into speaking before you are ready. If he pressures, you leave the room or house. You need to be able to feel free to GAL without him snooping and worrying, after all he loves OW, no?
Another boundary is to not listen to him lying anymore. Just stop him and tell him that it's incredibly insulting/disgusting/etc and walk the F away.
Don't go running up to him out of the blue and profess your boundaries either, just make them clear as the issue(s) arise.
What boundaries do you think are good for now?
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.