that you've been so glad that you thought you'd never see them again?

I've just found out this girl who was absurdly nasty to me at school is going to Glasto, and my stomach just did a little somersault. Although it's pretty unlikely I'll bump into her, just the thought of being in the same place as her makes me feel uncomfortable.

So yeah, did you ever have that? Tell me about awkward times you've bumped into horrible people from your past.