Making friends with former bully

DEAR HARRIETTE: My friend became good friends with a girl who used to pick on me in high school. I feel a bit betrayed, even though it was so many years ago. I almost feel a bit silly that feelings are so hurt about something that happened so long ago, but it still happened.

This girl was so mean to me, and that's all I can think about when I hear her name. I changed classes at one point because sh…