What is the worst case of total rejection you've ever experienced?

Decades ago as a minor we were transferred to Dallas from small town New Jersey. Before school began, a girl my age, 16, had a party in her backyard she called a “Get Acquainted Party.” I had spent a very depressing, lonely summer in Dallas having left all my childhood friends so I thought maybe, just maybe I’ll meet some girls today. Or, just one. One single soul would be great.
It still seems hard to believe. I drove up and went to the backyard. There were about twenty girls talking and joking. Not one single girl said one word to me. Not even a smile. And it wasn’t my appearance. I thought , “this will pass.” Half an hour later no one had said a thing to me so I very sadly walked back to my car and drove off. No one noticed. It was a low point; very low. What about you?