Responses
http://www.mangago.zone/read-manga/kono_ore_ga_omae_nanka_suki_na_wakenai/
Probably there are others that I've read, but that's the only one that immedietly pop up in my mind...... hahahaha.....
╮( ̄▽ ̄)╭
I have tag but it includes all kinds of re-encounter..
http://www.mangago.zone/people/tag/2337/Re-encounter/

Are there any good romance manga (shoujo or yaoi) with a character reuniting with an old classmate (preferrably someone who did something upsetting to them in the past)?
I've read most of the popular ones already
Thanks!