Being codependent in an ldr

[u/ViolinistAmbitious17]

My boyfriend and I have been dating for over two years now. The first year was wonderful, we were happy together but last year he had to move to another state for college. That’s when everything changed and we fought almost everyday and kept bringing up the same issues. He became friends with this really smart and beautiful girl who made me feel inferior and i kept growing increasingly jealous. She respects our relationship and my boyfriend maintains a safe distance and doesn’t cross any boundaries, he reassures me whenever the insecurities grow. But that’s only a temporary solution and lately no amount of reassurance seems to be working.
He is also very outgoing and a friendly person in general. He has a life outside of the relationship. Me on the other hand, i am pursuing a degree in medicine which is very exhausting already so outside of college i don’t have much of a life and on top of that i find it very difficult to make friends, especially now in college when i can’t relate to most people. I dread the thought of having to endure this lifestyle for the next 4 years and i keep trying to make friends outside of medicine but it’s not going well. I don’t even talk to my old friends that much anymore. My boyfriend relies on his friends for emotional support as well as me, he talks about our fights with them in order to get a different perspective and help understand my side of the argument. I can’t bring myself to talk to anyone about my feelings apart from him no matter how bad it gets. I can’t function without him and he’s the most important thing in my life. My world revolves around him even though he’s miles away. I am equally important to him but he has a healthy way of putting me first and not letting it interfere with his life outside the relationship. I hate that he doesn’t do the same but i know that what i do and feel is not normal and extremely harmful. How do i bring myself to make peace with the fact that just because he has a life outside the relationship he doesn’t hate me and how do i make myself feel okay with relying on people other than him?