I'm scared my boyfriend will meet someone else in college

My boyfriend is a college freshman and I’m a soph. We go to schools 30 min from eachother and I’m so scared that he’s gonna meet someone better than me. We already talked and I 10000% trust that he would never ever cheat on me (he’s just not like that, he’s such an honest guy and wouldn’t be able to stay with me if he did, not that he ever would). He told me that to lose me for just a hookup isn’t possible, he said he’d be losing so much in me (emotional support, school support, etc) that he doesn’t see any worth or interest in hooking up right now. He said he wouldn’t be able to function without me (not 100% serious, more of a hyperbole).

But I am afraid that he’ll eventually meet some girl he has more feelings for. He’s made friends with girls that are way prettier than me, and who knows if they’re funnier, more easygoing, etc. He said that my first year he always tried to think of it asnjust wanting to enjoy the time we have rather than him worrying about me finding someone else, he said he’d be happy for me if I did even if it hurt him.

He’s honestly a really wonderful guy so it’s not fair to him that I’m feeling this anxiety and I can’t keep expressing it to him. I feel great when we’re together but when we’re not I start to feel anxious and I know that’s wrong. We’ve been together for a little less than 3 years. He goes to a huge party school and I go to a small little private school so he has the chance of meeting way more girls than I do guys.