I remember people telling me this, and it couldn't be anymore true. My best friends from HS, I rarely talk to anymore, and when we do talk, we usually end up arguing. They think i'm acting different, I think i'm maturing. It saddens me everytime I think about it. At the same end of that, I have two close friends from like 5th grade who I still talk to, not as frequently as I used to, but at least we still keep in touch.
I KNOW a lot of people from all walks of life....I just hate that I can't be as close with them as I used to be. It bothered me a lot originally, but knowing that other people go through this too, makes it that much easier.