I take this to mean a physical best friend. As in, the two characters here (the narrator and the friend) are the best of friend throughout their youth, but gradually drift apart in location, etc., but the feeling never changes. And during this separation, the narrator misses his friend, which is how the song ends. At least that's my interpretation of it. Of course, everyone will see it different, but for that meaning, I can relate quite a lot.
I take this to mean a physical best friend. As in, the two characters here (the narrator and the friend) are the best of friend throughout their youth, but gradually drift apart in location, etc., but the feeling never changes. And during this separation, the narrator misses his friend, which is how the song ends. At least that's my interpretation of it. Of course, everyone will see it different, but for that meaning, I can relate quite a lot.