Right now you are in shock. Nothing you do will help much. It's just pure pain and anger. Let it be. There is no other way out of this mess.
You won't wake up tomorrow and learn it was just a dream. It will hurt so much, sometimes you will even laugh at your disgrace.
The difference here is what you do with this pain after a weak or so. You can chose to keep being angry and make it easy for him to justify leaving you or you can breathe and decide to DBing.
After all you came to this board to save your marriage. Your H is in this platonic love right now, but what about tomorrow? And after tomorrow?
Talking about dropping the rope is just anger right now. Honey, you have a long way ahead of you. There is much to work on, a lot to learn, many things to do.
Take some time and grieve. Let the first shock go away and then you can decide on some stuff.
I am not ignoring everything the bastard did to you. Or even the friend you helped out when she needed. I am just saying that you're not done yet.
Don't try to solve anything today. You are not well and you won't take the right decision.
Just be alert of your surroundings
I know you are strong and will face it all with your head up.
It will take time, but you can do it.
Holding you in s big hug (((((((((((((((((((RED)))))))))))))))))