Cheating on your partner could be unironically be a good thing for her
I know I will get a ton of hate comments for saying that but I’m asking you to at least consider the argument without being overly emotional and thinking of it logically rather than purely as “him bad guy, me angry”. The point here is that if a guy cheats on his wife he would not have to pressure to get laid with him when she doesn’t feel like it or she wouldn’t feel like doing it just because of him when she doesn’t want it, it could still happen but relatively less if the guy has side options, this is assuming the guy pays for his wife mainly and doesn’t change his financial behavior towards her.
Genuinely why would that be a bad thing, the wife gets to not feel like she is with a pervert constantly and the guy gets to get laid more, that’s why polygamy worked technically. And I think it’s better to not tell her so she can feel better for her ego