Answer:
What flies forever, Rests never?
A house with two occupants, sometimes one, rarely three. Break the walls, eat the boarders, then throw away me.
What binds two people yet touches only one?
What begins and has no end? What is the ending of all that begins?
Sharp and long, flag of the world. What is it?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?