I feel jealous of my boyfriend because of porn

Hi everyone. I’m 19F and my boyfriend is 21M. We’ve been together for about 3 years, and overall our relationship is good and trusting. But there’s one issue that’s been bothering me a lot, and I don’t really know how to deal with it.

My boyfriend watches a lot of adult content. I often notice channels on his phone with girls (goth/alt types, etc.) who post revealing photos. He also watches cosplay content and short videos where the focus is on girls’ appearance and bodies.

I understand that this is pretty common and a lot of people are okay with it, but for me it’s really hard. It makes me feel jealous and insecure. I catch myself comparing my body to theirs, and it’s usually not in my favor. I’ve also gained a bit of weight recently, which made these feelings worse.

He says he only does it for physical reasons, like to last longer during sex with me. I’m trying to be understanding, but emotionally it still hurts. Sometimes I feel like maybe he prefers girls who look like that, or that he might be thinking about them instead of me.

Recently something happened that really upset me. I accidentally walked into the bathroom and saw him watching that kind of content. I know it might not be a big deal objectively, but it affected me a lot.

I don’t want to control him or start fights, but at the same time I can’t just ignore how I feel. I care about our relationship and want to keep the trust, but I also want to understand how to deal with this in a healthy way.

Any advice? Is this something I should talk to him about again, or is this something I need to work through on my own?

TL;DR: I feel uncomfortable and insecure because my boyfriend regularly watches adult content, and I’m not sure how to handle my feelings or whether I should talk to him about it again.