How would you feel if your partner...

How would you feel if your partner is hanging out with these guys that are nothing but man whores. And every time they find a new girl your partner adds the girl on Snapchat, Facebook and Instagram. And when you bring it to their attention that you want them to delete them. They say they have on Facebook and snapchat. But refuse to delete them on Instagram? Also these friends also share these girls nudes with your partner ? Would you be upset and hurt? Like it gives me constant anxiety because of it. Like he might do something more then just follow them on social media. Am I overreacting or...?