I know this feeling very well. For me it wasn't drugs, I got into conflicts, and had a bit of, well, a nervous breakdown, that I guess I'm just barely recovering from now.
It's weird, because you can look back, and it is, just a past life. No traces left really. No friends left from it. Just little things come up, and, yeah... I dunno. I wish I could have friends again. It was a nice feeling. But I don't believe I'll ever have anything like that again, it seems I just can't cooperate well in a group.
In my case, I had a chance at reconciliation of sorts I guess. Nothing came of it. But, at least it was tried. My one best friend from said group, he seems to just not like me anymore, never talks to me really. We were friends since high school. Whatever.
I wish I could feel accepted and all that fun stuff again. I don't know, last times I felt accepted, I wasn't really. So I'm just really mistrustful of people in general now.
It's weird now in my life. I'm much more attractive, hell, probably have better social skills, but I'm miserable because I have no friends. Back when I was ugly, I had friends. Odd.
/mope