It bothers me for some reason that my boyfriend never gets jealous, what do I do?

Another guy could literally be openly flirting with me or touching me in front of my boyfriend and he doesn’t say anything or act like he cares. When a creepy? (I guess you could say) guy wouldn’t leave me alone, even my boyfriends friend stepped in to help me and my bf didn’t when they were both right there. I wish I didn’t want him to feel just slightly jealous, but I do just a little bit. It kind of hurts. Yes, I know it’s clear that he trusts me because I’ve never cheated on him and never will and that’s hopefully why he doesn’t get jealous but I feel like he doesn’t care. I’m not overtly jealous myself, and I can control it majority of the time as well. But he knows I get a little bit jealous when he hangs out with girls, but that doesn’t mean I don’t trust him at all or anything. I don’t know, how do I not feel like this?