My H had 3 ONS's with 3 different women, and a 4th woman he had 4 "ONS's" with over an 18 month period (like, no dating, no relationship, just a booty call every few months). In my eyes, I'm disgusted that my H could treat another human being like that, use them up and throw them away like trash. That's NOT the man I married. But I was able to forgive him for that. And I know others here have forgiven their spouses for the same type of thing, and many have forgiven their spouses for different things.
Trust is like paper. Once it's crumpled it can never be perfect again.
Whether ONS, LTA, EA - they are all the same. They cause you unimaginable pain.
Maybe one day I can forgive...
You made a fool out of me and she made a fool out of you