If you read "20 Years Gone: A Divorce Story" by Dorian Wright, you will find out about another person that went through a very similar experience as yours.
It's always awful to be enlightened about cheating, or your spouse's alternate life.
I’m sorry 😐
If you’ve done all you can then all that’s left is to take care of yourself. Brace yourself, the ride will be bumpy. Don’t seclude yourself. Let your loved ones be your support system.