We dated a year and a half, broke up around early 2018 she knew i was working towards getting into medical school, i didn't get in while we were dating or the subsequent year after we broke up but I recently just got accepted and she comes out of nowhere to initiate contact and congratulate me. Do girls ever go through regrets and realizing they had something good and lost it? Just want some advice on the phenomenon, I definitely don't want her back cause I know there's higher quality women to meet in medical school and at hospitals.