My high school girlfriend was super hard for me and it took several years to fully recover even though I was otherwise fine. There was nothing really wrong with the relationship, we just went to different colleges a few hours apart and after a semester trying to make that work that was it for her. I contacted her a few times in the years that followed and she occasionally me. I haven't had any contact since I graduated 24 years ago. When social media became a thing I looked her up and found out what she was doing but never reached out. I stayed off social media myself. About 5 years ago my brother found an old message from 5 years before that which he'd missed at the time where she'd tried to reach out to me through him. I didn't reach out when he told me either. We're both married with kids. I'd kind of like to catch up but even though it's been a super long time and they have died way down there is still some lingering emotions there. My wife would also kill me if she found out so not worth it.

Thankfully that was a one-and-done for me. I never had a relationship between then and my wife where I was hit that hard at all. Nothing to do with being jaded, I just didn't get that attached where I wasn't fine shortly after.