Turned a corner

[MrBond]

I may be going against the grain here, so take these suggestions with a grain of salt.

Your H has made his choice. He has announced to the world how much he adores the OW and how little he respects you. That one post speaks volumes. Especially when they are already spending time together.

IMHO here is what you need to do:
1) Send him a text that you can see that he made is decision and that you are no one's "backup plan". No explanation is needed. Just send that to him.
2) Put his clothes packed and in the curb and text him that that's where they are.

Then spend the weekend with supportive family or friends. And through it all, DO NOT contact him or answer the phone if he calls. Start rebuilding your self-esteem and self-worth.

YOUR SELF-WORTH IS NOT MEASURED BY HOW YOUR H SEES YOU, BUT HOW YOU SEE YOURSELF.

He will not be making a decision until he sees that he has lost you and it is his loss not yours.

This is what precisely will happen, he will either cry and say how YOU could be so cruel, etc. But don't give in. You aren't the one who was unfaithful. You have no right to have a guilt trip put on you. He made a choice to step outside the marriage. Not you. He is the one who should be licking your shoes, not vice versa.