did I overreact?

my boyfriend and I got into our first fight last night and I’m still a bit bothered by it... we’ve been together for 8 months and change. our relationship has been really great, we’re good at communicating with and talking to each other and have never had an argument until last night.

he met a girl driving for lyft who said she was new to the area and wanted new friends, so they exchanged snapchats. fine, whatever, I don’t care that he has female friends because the majority of my friends are guys and I respect his friendships. until he started showing me her story and they were full of her nudes and vids of her fucking other guys. it was a joke and funny to both of us at first but after a while it became something that I was uncomfortable with seeing, especially coming from my bf. I’ve generally been really cool with a lot of things but the fact that they’re friends and he had her premium snapchat made me real uncomfortable.

last night he said “yo look at this” and showed me her story and I told him I didn’t wanna see it, he asked if it bothered me and if he should unfollow it and I told him that I wasn’t gonna make him do anything but that it did bother me. so he unfollowed her, and after a few seconds of silence went “I’m gonna be real with you I really didn’t like that”. I said “why is it a big deal??” and he went on this whole rant about how I knew they were just friends (“I don’t even find her attractive”) and that our own relationship was built on banter, that we’re both comfortable with sex and sharing things like that with each other (which we are), so he didn’t know what made this situation different—especially since I have male friends and we have mutual stripper friends. I told him I merely found the situation uncomfortable and we apologized to each other from there.

am I wrong for still feeling bad that I made him cut her off because it was just something that I didn’t like? I don’t wanna seem like I’m controlling him or being crazy or anything, I just feel weird about it