Most Helpful Girl
I wouldn't cheat regardless of whether someone is famous. Being famous doesn't make an individual any more or less of a human being. Someone being famous doesn't mean you shouldn't cheat simply for trying to uphold a reputation. If someone is going to cheat then they're going to do it.
Either way, you shouldn't cheat regardless of who you're with because it's the wrong thing to do. If you can't control yourself or have doubts, break up with the person or suggest taking a break.