Answer:
I hold two people together but touch only one.
What has to be broken before you can use it?
No matter how much rain gets on me, I won't get any wetter. What am I?
What is easy to get into but hard to get out of?
Without a bridle, or a saddle, across a thing I ride a-straddle. And those I ride, by help of me, though almost blind, are made to see. What am I?
Give it food and it will live, give it water and it will die.