Why do i feel so attached to a guy i only went out once with?

I was working at my local McDonald's drive thru when this guy with a cool car pulls up to pay for his order. He was riding a 1978 mustang, NO hood so a very very cool car. I go "Hey thats such a nice car!" And we both nerd about cars for a good bit until I say "wow this must be nice on the highway" when he goes "hey, let me take you out for a ride. May i have your number?" I give him my number, fast forward. We text back and forth for a bit until we go out on our first date. Just a car ride in his mustang around our town and a walk in the sunset. Talking to him felt like talking to someone I had been friends with for a good while. The date goes really well, he says "I'd like to go on a second date, would you like to?" so I say "sure!" And all goes well. Or so I thought. We text for a bit after that, and then I ask him, "hey r u free Saturday?" In which he ghosted me. I late realize that I lost my earring in his car so I text him "hey ik u ghosted me which is fine (no hard feelings we only went out once), but could you look in ur car if my earring is there? It was gifted to me by ny grandpa who passed away" I could tell he hadn't blocked me yet so he saw the message and still ghosted me. I feel sort of hurt. I guess I was sort of into this guy, he seemed into me but things went downhill.