Answer:
I run smoother than any rhyme I love to fall but cannot climb.
I am used when you jump off a bridge for fun.
Though I am dark Adam married me.
If I have it I don't share it. If I share it I don't have it. What is it?
Who is the most foreign visitor you could imagine?
I spend most of my day eating white. When I am quick enough I get rewarded with fruit and something blue. In a dark room with blue walls I run from the ghosts that roam the halls