Cheating is normal now??

I have realised cheating amongst my attractive friends is so normal like they just casually say "yo bro I made out with [insert name] last night even tho they are in a relationship. These guys will spend weeks trying to get with someone just to cheat on them once they get with them. And what's up with rosters?? Like why is it a flex to have 20 different girls whilst you are in a relationship with someone. I have tried bringing it up to them but obviously because I am ugly they hit me with them "i cheat because I want to and you don't cheat because you can't" Maybe it's because I am not used to being shown love or something but I would never ever cheat if given the opportunity to get with someone the world is just a disgusting place