Can’t think of what to do

Me and my boyfriend have been dating for about a year now and was best friends before that. We live in the same dorm and he was all lovely and sweet to me at the very beginning of our relationship but now he’s so distant and doesn’t even try to spend the time with me. He only meets me when i ask him to and i don’t see any interest from him anymore.He used to kiss me every time he could but now he’s not. He used to ask me on dates but now he’s not even trying to do so. He always watches movies with his friends and hangs out with them.It feels like I have disappeared from his life . We used to do everything together but now we’re just two people who are in a relationship leading two different lives. I love him so much that I don’t know what to do. I have talked with him about these issues with and he doesn’t agree with any of them saying I’m overthinking. He doesn’t want to tell others that we’re a couple only his friends know about it. What should I do??