When a woman cheats on a man that she is in a relationship with. Men never cheat though, they only make new "friends"
I came home one day to find my wife with another man. She said it was payback for me cheating. I said i just made a new friend and she is the adulterer. So she committed adultery
A word used to describe a person who cheats on their husband/Wife. Recently popularised again by Kim Woodburn after she used it to describe Jamie O'Hara.