Obviously she’s going to be less mad at you. She still going to be mad, but part of her.... a VERY small part of her.... will at least be impressed too, and a small part of her will feel good about herself that she is married to a guy that’s attractive enough to get a celebrity....
But she still going to be pissed off and jealous, and hurt, and she will think you’re an a*sshole.
I recommend telling her, rather than keeping it a secret, but you should just be really apologetic. I would definitely say that you were slightly tipsy (but not drunk... cuz if you say you’re drunk she’ll think maybe you didn’t bang a celebrity after all) and say that your friends were pressuring you to do it and they all did it.
Just tell her that it’s never going to happen again, and you want to make sure you control your alcohol from now on, try not to drink much, try not to hang out with stupid friends, etc.
If you come clean, show love/sorry, and mention how you will change, she will forgive you