I'll bite.
The resolution is TOO awkward. I know the entire idea seems to be resolved around the kiss itself, but when it comes everything goes into a literal downward spiral. I think, considering it's what you want the entire script to revolve around, it has to provide a climax. I understand the need to keep it "innocent" but all the talk before it weakens the end of the script a little too much. Perhaps a tiny bit less awkwardness would make it seems less weak in terms of a conclusion.
The rest is fine, and cute and all...but I think, considering its short length, there isn't much time to get any depth on peripheral characters. Both the father and this "Mike" character seem to be literally nothing but one dimensional plot devices. An angry father to make us empathize for the main character and another guy to ruin the moment. I am no screenplay writer (I write plays, it's pretty different) but even in a short screenplay it is important that character other than the leads at least have some sort of motivation in what they're doing; simply using them to advance the plot without any further development weakens the story in general.
Just my two cents, seems light-hearted and cute through the rest of it (Cheesy montages intact).