I agree with the person who said that your first mistake was assuming a person you met in Tinder was interested in a relationship. But I can see how after meeting someone a few times on a few dates one can get the impression that the other person might be at least interested in exploring the possibility of a relationship. Sex too soon or withholding sex are often thrown as reasons why things don't work out. I believe in most cases there's more to it than just the sex timing aspect that's not working or didn't work. I got used to getting dismissed after withholding sex for a bit. But the right person always comes around eventually.

All I can say is don't kick yourself over what happened. It's probably not a specific something you did but most likely a combination of a few things- if I were to guess. Nonetheless, I am biased and projecting a little because I once did get overtly excited over someone I met through a non traditional online type deali-o, I did send the super long annoying text after feeling both a bit overtly excited and confused about his behavior, and I too feel that pressing for answers is what finally ruined things. But then again- sometimes it's best to know where you stand, and you need to ask the other person as there is no better way to know exactly what's going on.

Let him go. he's still on Tinder. It didn't work out for him. The real reason really doesn't matter. He's gone. Move on to the next. Dating can be hard because sometimes you get excited and all "FK YEAH!" about a person you meet but they don't feel the same OR they do but you didn't come Into their lives at the right time. You'll find someone else. All dynamics are different, all people are different, but my experience- which doesn't have to be yours- so far has been that the least Fs I give, the more the guy wants me. Go figure. I stopped revealing feelings and asking where I stand and now it's them pressing to make things exclusive and talking exclusivity even before sex. Could be the people I'm meeting or it could be it really works often. I dunno.