Assalamu 3aleykoum - Need advice about fiancé following non-mahram women

Assalamu 3aleykoum, I need some sister-to-sister advice about a problem I’m having with my official fiancé. Yesterday we argued about something that’s been bothering me. On my social media I don’t follow any men who are non-mahram - only my mahram relatives and him. He, however, follows other women. I asked him to unfollow them; he agreed but said he would keep following the fiancées or wives of his friends, women he knew before he became close to those friends. Honestly, that made me upset. I asked why he feels the need to follow women who are engaged or married and why their husbands or fiancés don’t seem to mind. He said I was overreacting. The conversation went on and he finally said he would unfollow everyone except his best friend’s fiancée. I still don’t understand why he’s so attached to this. He says he doesn’t want to hurt their feelings by unfollowing. We’re not married yet, but this has made me doubt the relationship and even doubt myself. Am I wrong for expecting my future husband not to follow non-mahram women? He is very protective and jealous about me - he doesn’t want me going out at night, having male friends, or traveling alone without a mahram, and I accepted those limits. So why is it so hard for him to remove a follow? I’m not sure how to handle it. I’m afraid of ignoring it now and regretting later, but I’m also afraid of ending things and losing a good man. He’s done a lot for me and sacrificed much. He truly is a good man, which is why this is tearing me up inside. Please give me honest advice as if I were your sister - what would you do? What Islamic, practical, or emotional steps should I take to resolve this?