Who am I

I have a bed but never sleep. 

I always move but never alive.

I can speak but I have no mouth. 

I can fall but never rise. 

I run fast but have no feet.

I attract  a lot of life.

I am see through but you can see me.

River 

I'm creeping into you house.

Eating your food.

Watching you sleep.

And I can fly away without you knowing I was ever there.

And I like children. (evil laugh)