Before I start, don't worry! This isn't some awful thing that happened last night and is plaguing me. This happened over a decade ago.
Years ago when I was still a boy, I was at a raging Halloween party dressed as Kriss Kross. Basically, my clothes were backwards, and that's it. Sometimes I'm really good at half-assing it. I was approached by an outstandingly gorgeous girl who was there on a date, I think, with a friend of a friend. She found herself much more interested in me than this other guy.
We sat down on a couch together. There was so much going on at this party that nobody could hear or notice us. We were instantly attracted to one another. As we sat, we sort of touched each other here and there and got to chatting. We quickly realized that not only did we have nothing in common, we also didn't like each other.
So yeah, bah boo to that. So she left. I wasn't fazed. I still partied and had a good time not drinking. Party on, Wayne, and all that. At the end of the night, I was leaving and went to say goodbye to her.
We moved in for an awkward hug, and I ended up knocking her beer and spilling it on her shirt! Booooooooy, was she pissed!
So not only did all of that go terribly, I also burnt the bridge to said friend-of-friend whom she came with. I felt bad about it in the following days, but now I get a good laugh.