Hahhahhahaaaa, you have a hickey, you have a hickey! My neighbors last name is Hickey, doesn't that suck?
Anyway, I don't really remember either. I think there were lots of things that people SAID worked, but really, i think you just have to wait it out.
Here are some things that we used to try: a frozen spoon on the hickey; twisting a lipstick cap over the hickey. I can't personally vouch for either way, don't even understand why the frozen spoon, but supposedly the lipstick cap was to help break up the broken blood vessels. No idea if that's true.
YOU HAVE A HICKEY! hahahaaaa