It makes no sense how you can cheat on someone. Or why you would knowingly be a side piece. It really hurts this happened to me. My now ex was cheating on me with a girl who knew he had a me as a girlfriend. She was so unable to see outside herself and her wrongs. When i found out she said “this is annoying how she’s always bugging about stuff. And if she really has a problem with me, send her my way”. Like what is wrong with people?