Overwhelming guilt, do I make amends... should I?

I haven't seen my former classmate since 6th grade. I had her in my classes for both 5th and 6th grade. A brief flashback to the past, my friends and I knew her by another name and many things happened that I'm now ashamed of. I was unfortunately the main, kid ringleader in the group. We moved to different school afterwards and didn't see her again.

Fast-forward to last month. My older brother (23 M) has been dating a college girl my age. He hates posting on social medias and tends to be selective with the people he introduces to the family and has in his life. He's been dating his girlfriend for 6 months now and last month finally introduced her to us, for a lunch and family get-together. It was none other than my former classmate. Yup she's back. We're both 19 year-olds by now.

Needless to say I was taken back by it, speechless and ashamed. I've greeted her (kind of struggling to look her in the eyes) as if it was the first time meeting each other and spoke normal, adult conversations. My brother brought the topic of how it's a coincidence she went to my same grade school and that it's a pity we never met, etc. I kept with the lie but changed the topic. She secretly smiled and winked at me. Yes, she remembers me. I remember her too. Our next reunion is this Thanksgiving Day. I was thinking of getting a moment of talking to her in private.

Now I'm thinking about her, if what happened back then affected her, if I ruined her early social life, etc. Now I can't imagine doing what I did back then. The guilt is killing me. Do I make amends with her?

Overwhelming guilt, do I make amends... should I?
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