I am attracted to this mini story because it has a problem, action and a solution.
The masked ball sounds a novelty in this day and time and its effectiveness in hiding true identity comes through.
The main character appears a bit self centered judging by his opinionated view of others and himself.
"I really don't know why I bothered to come. I don't have a date, and I can't get wasted."

The couple seems to match as they both are single and in want of company. Chance meetings, sometimes work well.

Dialog is good and the setting appeals.

sentence structure is enjoyable and the self reflections of the person are amusing.

could be enlarged into a bigger story.

Write on!