"Cheaters never stop cheating, they just get better and better at hiding it."

"Once a cheater, always a cheater."

I am looking for your opinions based on if you have cheated on a loved on, if they have cheated on you, someone in their past, etc if those two statements are true. In a bit of a tough spot and could use some advice guys, thanks as always.

EDIT: She cheated on her ex-husband.