Obviously I am bothered by this or I wouldn't be posting. But should I be bothered? That's what I am trying to figure out.

My best friend and I have been friends for a long time. She is a very important part of my life, and I am grateful for our friendship. However...My best friend is also friends with someone who has been very cruel to me in the past. I have no relationship with the person who has been cruel to me, but there was a time when I was very hurt by how this person treated me.

My best friend can certainly be friends with whomever she chooses, but something about this does not feel right to me. I have never brought up the subject with my best friend. Should I? I could use some feedback. Thanks!