Idk why but I’m really obsessing over my ‘best friend’

I lived with my best friend until I moved out for an internship. I kinda realised now that I moved out that the relationship is one sided, and I’m the only one who wants to keep the same kind of relationship. For some reason, I find myself checking if he posted a story, sent me a text, even followed new people like really often. It’s really bad and I don’t want to do it. I wanted so bad for him to want the same friendship at first, now it is just unhealthy. I moved to a whole new country and I’m still in the process of meeting new people and am still really lonely from time to time, and when one would expect a friend to check up on another friend like me and other friends have been doing with eachother, he just leaves me on read, or likes my texts. Its really annoying and it bothers me but at the same time what he’s doing is self explanatory and doesnt require me texting him:”why dont you check up on me or reply to my texts?” Anyways yeah I needed to get this out…