Am I overreacting? I found a video of my old bully being mean to me.

I’m a 24yr old female. I tend to be very optimistic and never dwell on the past. Today I was cleaning out my camera role and came across some very old videos of girls bullying me. I knew I was bullied in school but seeing those videos made me realize today how badly I was treated by EVERYONE. I was bullied to the point of almost suicide and cutting. I see a therapist and I’ve grown so much mentally and spiritually since then. Ever since I saw those videos today of those girls I can’t seem but to feel so sad. I have an amazing boyfriend and life now, I have no reason to be sad. I was going through old pictures from an school friend, she sent it to me years ago and I saved it. How do I get over this? Am I overreacting?