growing distance...

Hey guys, I normally don't post threads as much but I do need some advice, or some words of wisdom, and maybe a few of your own experiences to share.
Recently, my best friend from HS came back to the city from the military and I was pretty damn excited to see him. I can't help but feel that there was a bit of change in between us because of what we both gone through when we separated in high school. My discomfort grew more because of I didn't come out to him during the time when I first came out to my parents. The first time we hang around grew to be a bit awkward for me because I didn't feel like myself.... Like I had to play a bit of a different persona. So the next time we hung out, we both spent some time around each other until the moment came to tell him. He said he didn't mind at all and that my skills as a musician were a bit more concerning lol. I can't help but feel like there's a bit of a growing distance, like I felt in a lot of straight people, where they didn't feel like you were a necessary component in their life. I can't help but wonder if that is going to happen between me and him. Since the first time I met him, I had this strange conscious, that I was going to go the whole mile for this guy, just because I felt like this guy was going to be family. I don't want it to be that way, and it might be me overthinking, and I don't think he might understand what I'm going through every time I go through with this, but I hope that he does stick around. Maybe the lessons that I learned in life, were meant to help him or maybe he's just another lesson learned that might help me move forward towards a better path. Whichever it is, I hope that it doesn't happen, because although I'm terrible at showing emotions, he's an essential friend in my life.