So you didn't land your dream date? Tough luck. Even if you ended up with the token class geek, never let your prom date know that he or she wasn't your first choice. You're stuck with each other for one short evening, so plaster on a genuine smile and play nice.
Keep Those Lips Sealed:
Avoid whispering to your best friend that your prom date is "so boring, you'd rather be at home watching Grey's Anatomy reruns." In fact, it would be a good idea to refrain from trash-talking your date until after prom. Or, better yet, never.
There is no unwritten rule in the "Book of Prom" requiring you to stick by your date's side throughout the night. Don't feel guilty about letting loose on the dance floor with your friends, but save one slow song for your prom date as a kind "thanks" for putting up with you.
If your prom date is lovestruck - but the feelings aren't mutual - make it clear that though you're grateful for the prom date, your relationship is strictly platonic. Do not follow this friendly reminder by making out with your off-again, on-again sweetheart on the dance floor. No kissy face allowed until you and your date part ways.