This is interesting as Im looking at moving back to an area I grew up in and am bound to come across people I went to school with. Ones who picked on me, ones I picked on, friends and people u just don't get on with.
So this topic has been on my mind

I would be polite I think but ask why do you want to "friend" me when you where far from friendly at school.

I will work in forgiving my bullies and hope those I picked on will forgive me.