Nicole Kidman
We know what you are thinking, how could anyone cheat on the gorgeous and talented Nicole Kidman? The actress has been around for decades and has aged like fine wine. Any man would be lucky to have her and you would think they would realize that. But Keith Urban is not just any man.
He is a country music star and a popular figure in his own right. We guess that this level of fame made him think he could have gotten away with having an affair with model Amanda Wyatt. But the model eventually outed him publicly, forcing him to own up to his actions.