You will need a good pick-up line, OP.
Fortunately for you, I have a couple already loaded.
"My love for you is like diarrhea. I just can't hold it in."
"I'll -blam!- you so hard, I'll scramble your eggs."
"If you were a booger, I'd pick you first."
Those are my favorites. They seem to work for me, but it is all about delivery, OP. I went through the trouble of finding a website filled with pick-up lines for you.
Just find the one that suits your character the most and roll with it. Don't practice the lines. It has to be natural.
If all goes as planned, you will have more than a date to homecoming. Good luck.
[Edited on 10.02.2012 8:52 PM PDT]