How much have you read up on affairs? Do you understand exactly what your dealing with here ?
I think you need to learn more about affairs.
OW is opposite of you. Something different.
You see how he reacts this winter when you are out living with your friends and doing all those activities. Hopefully you will not as you should detach.
He not only lost you. He lost his life. Does he realize that yet? Who knows? Right now he is having an affair. So who cares?
You have crashed and burned.
His turn.
Take this punch in the throat and get back up on your feet.