I was standoffish and isolated most of the time as a middle school kid, because that's what I thought was "cool" to do...I saw the other kids doing the same, so figured I'd be as good as them if I acted like them. Of course, it didn't work that way. But as a rule, teens do stupid and mean things sometimes. Heck, ADULTS do that too. What counts is that you obviously learned from your experience and won't be making the same mistake again.