Like he was interested and then ghosted before you start blaming yourself (and I know you’re trying to right now), let me just say: you are not the reason he acted. Seriously. It is not you. It’s him. You don’t truly know this person all of that well. He might have various goals whenever it comes down to dating.
Ladies could be similarly confused, since this Sydney girl (59) explains: "I want intercourse in a relationship that may endure. I can not do one stands because I'm only interested in sex if there is chemistry and if there's that spark it means I will want to see them again night.