"Thou shalt not commit adultery" is one of the Ten Commandments, right there between "Thou shalt not murder" and "Thou shalt not steal." You don't need to be religious to know that cheating is very uncool...and that cheating stories are very entertaining. A Reddit thread asked, "People who were caught cheating or caught someone cheating, what is your story?"
These are the most interesting ones. Some are salacious and some are just heartbreaking.
My parents and I went to a hibachi restaurant once. They sat us next to my sister-in-law and her date.-fungeoneer
The one time I was cheated on made no sense.
It was first year uni, I was 'dating' a girl casually for like a week, maybe two, and she was talking about getting more serious. She seemed cool, I was down.
Next thing I know I come home unexpectedly early from class.
There she is getting railed on the couch by my roommate.