Hey everyone I know this subreddit is already clogged with "why me" sympathy posts but I'm asking you to suffer one more and help me change myself.

About me: 21-year-old college student, in a frat, in the gym 5 days a week so I don't doubt my physical attractiveness (although I'm a little short), decent job and my grades are good. For the most part I have my shit together.

One thing I can't get a grasp on is women. I have so much trouble interacting with girls I think I might be on the spectrum. I have no problem opening; like I said, I'm not bad looking by any means. But I feel like as the conversation goes on, I kill the mirage with my words and their interest slowly fades, I lose my enthusiasm and then clumsily disengage before I overstay my welcome. And when this isn't the case, I feel as though I'm just being strung along for their amusement and I never really had a chance in the first place. I could be overly paranoid, but I don't think so.

I took a girl on a date function last week and she was clearly into me from the jump. We had a great time and I feel like I did everything right: I kissed her before we got off the bus and we didn't really take our hands off each other for the whole trip, but when we got back she told me she didn't want to have sex because the "vibe wasn't right." Last night I invited a girl who I hooked up with months ago to a party. When I went in for a kiss she goes off about how she "just wants to be my friend" and "she already has people for that kind of thing". I was mortified, but these things happen to me too often.

What can I do to change this? I'm not too concerned with banging out dimes every day but I can't succeed even when I try, and no matter how successful I am in other aspects of my life, I'm still seen as a joke for this in my social community, and its very frustrating.

TL;DR: Am AFC, pls help cuz idk what else 2 do.