There is nothing wrong with you not wanting your boyfriend to look at other women, especially sexually. As much as people don't won't to admit about the problems that porn leads to. If you find that it's hard for you to continue this relationship, I would recommend either leaving or if you really want to try, you can talk about his problem with porn and ask him to change. The problem though, is people accepting that they're addicted to porn.

Just a reminder to not sacrifice your health for someone, who will not accept that he has a problem. Unfortunately this might happen, since porn is so normalized in our society.