So it's basically like the movie "Hall Pass" from 2011, but with a celebrity instead of just random women?
My problem with your logline is that it's WAY too long, and spends all its time setting up what appears to be nothing more than the first act, am I right? Condense it to something like:
"After cheating on her fiance with her celebrity crush, ..."
Then what happens? What is the goal, what action does the protagonist take, who is the antagonist, and what is the protagonist's flaw? I guess the stakes - her relationship with her fiance - are implied.
I know you think that your hook is the idea of the celebrity crush that you're allowed to sleep with if you ever meet, and that's gonna be fun stuff to have in the film, but as far as a logline is concerned we don't need all that information. That's not what's going to get someone to invest in your movie, and that's not what's going to get someone into the theatre having bought a ticket.
I don't love the title, but that's more personal opinion.