<human>: Summarize the given text in a few sentences.

So I met this great girl (20/f) through a mutual friend from a series of parties we went to. I learned through the same mutual friend that she kind of dug me. He gave me her number, and we texted only once or twice, no real conversation sprouted. Fast forward a couple weeks later, I find myself at a party at her house and after some stilted conversation (I'm painfully awkward) she invited me upstairs for sexy times. For reasons I care not to elaborate on, she left disappointed.

So this was a little more than a week ago. I sent her a text (using the old number I got through the mutual friend) the next day and a couple more times that week, but got no response. I'm considering sending her this on facebook:

>Hi XXXX! I think you're a great girl, and I really want to see you again. I realize that I took so long to message you, I don't know what's wrong with me. I'm really bad at these things.

>So I tried texting you, but I realized that you probably didn't recognize my number, or maybe you're just done with me. If you ever want to talk or text, my number is XXX. And if you're done with me, I won't bother you again.

>(I really hope you're not, though)

Is this too long? Should I change it? Is it weird? Should I just move on? Any advice is appreciated, as I wasn't lying, I suck at literally everything involving relationships. Thanks in advance.
<bot>: girl is somehow attracted to my awkward self, had a bad round of sexy times, now she isn't responding to my texts. Need help to prevent me from being a weirdo.