This A Lister walked in on her A+ List guy right in the middle of him cheating on her. He thought she was out of town and hired some "entertainment" for the night. She was, but caught wind of what was going on because he was spotted at a "roach" hotel in the town they live in. Strange indeed.
She walked in and announced, "Ok, this is your Free-Bee. Considering everything you have done and are doing for my family I can look the other way this time. Next time, you won't be so lucky. I expect you in my car in 5 minutes." Threw his pants at him and walked out.
I have no idea why she thinks he'd stop since that certainly wasn't the first time he's cheated on her and he cheated through out every relationship he's ever been in. Good luck with that.
Source: Wine and Sass