This little gem to me embodies everything a short film should be. It has great acting, precise editing, good sound design, likeable characters with distinct personalities that serve as more than just vessels for the plot, and, most importantly, it has an actual narrative with a beginning, a climax, and a conclusion, all of which are perfectly paced for maximum effect.
My only gripe with this movie would be that, despite the whole premise being centered around a first kiss, we don't actually get to see said kiss.
But maybe that's kind of the point as well. We as the audience don't have to see the kiss in order for the narrative to work. It's a private moment that we have neither cause nor right to intrude on. Besides, the kiss isn't what's important, it's only a starting point for the real story - the characters' growing and changing relationship.
All in all I say give this one a shot. I promise it's five minutes very well spent.