Background: I'm a senior and this happened on my prom night. I've never kissed a girl, never had a girlfriend, but I'm pretty attractive (this surprises a lot of people).

So it's prom night and I've been dancing a lot with friends, etc. Then a slow song came on and since I came without a date, I went and asked 2 random girls at a table if they had dates and once responded no, so I asked her to dance. We slow danced and talked about a bunch of stuff, getting to know each other while gazing into each other's eyes. At one point, she pulled me even closer than we were and looked at me with the most seductive look a girl has ever given me. My mind was yelling at me to kiss her but since I had no idea how, I had the dumb idea of telling her "I'm gonna be honest with you, I want to kiss you but I'm kinda nervous" and we kept talking more as we danced, no kiss.

Then, the real dance music came on and I asked if she wanted to keep dancing, she said yes. We found her group of friends and we started dancing. She immediately started grinding on me and looking at me with the freakiest (in a good way) eyes and all that. Of course, I'm hard as a rock. A few minutes into grinding, she moves my hands from her waist to her ass and I'm on cloud 9 feeling her ass. At one point I squeeze and she moves my hand away but I return it soon after.

Anyway, this went on for a bit, more dancing with her friends for the rest of the night. At the end of the night, my group was leaving so I went back up to her and told her I needed her number, but she said to just add her on snapchat. She types in her username and adds herself and I say bye.

Now here's the part that I can't understand and need help making some sense of.

She doesn't add me back that night, doesn't do it on Sunday, and hadn't done it by today. Me being curious and confused, I asked one of her friends that I met from that night what happened or if she said anything about me. Her friend said that she hadn't and "she can be like that sometimes". I don't know what that means.

Then, the worst part. Today, I check my snapchat friend list and she is gone. To those who don't know, that means she blocked me. So now, I ask you to please tell me what you think happened and why the fuck she did this. It's been killing me all day.

Thanks so much.