Answer:
What binds two people yet touches only one?
A precious stone, as clear as diamond. Seek it out while the sun's near the horizon. Though you can walk on water with its power, try to keep it, and it'll vanish in an hour.
Dies half its life. Lives the rest. Dances without music. Breathes without breath.
Flat as a leaf, round as a ring. Has two eyes, can't see a thing.
Look into my face and I'm everybody. Scratch my back and I'm nobody.
What did the piece of wood say when he saw the screwdriver and screws approaching?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?