How Do You Know if You're Rejecting Someone?

i always viewed him as one of the popular or cool kids who just really wasn't interested in getting to know me. He invited me to his house when i went to visit texas and we became good friends. I had this sort of just perception, based on his social circle, of what kind of person he was - which was wildly inaccurate. No matter how cool someone seems like, you can't know someones how they feel about themselves through things that are external to them. Sometimes the people that are rejecting you the most fear rejection the most.