I can understand that. I wasn't really referring to finding out your spouse had an affair or is having one, but gives it up when you find out. I was trying to envision what kind of person would cheat on their spouse and basically say, "I'm going to be staying at OP's house 2-3 nights per week". That seems so cold. I couldn't imagine wanting a person that was even capable of that.
You cannot be lonely if you like the person you're alone with. Dr. Wayne Dyer