Dance tomorrow night...?

Tomorrow night my school is having a Sadie Hawkins dance. I know it's dressup but I'm just wearing a nice polo shirt and dark jeans. I'm not worried about that. The only reasons I'm going is because my friend doesn't know anyone there except his date. But this one girl asked IF i was going, not if I would go with her. I don't know what to expect at all. Think of this question as a story, and you guys have to pick the ending