I walked along the narrow alley
It walked along behind me
When I stopped, it stopped too
Yet like an echo, I had heard
Every footfall it had made
I waited in the darkened room
It waited there behind me
If I held my breath, it held its' too
Yet like an echo, I had heard
Every breath it had taken
I stood upon the quiet shore
It stood there behind me
If I ceased my tears, it ceased its' too
Yet like an echo, I had heard
Every sob that it had cried
I never had the courage to turn
To see what or whom stood behind
My unseen friend has left now
Yet I'll always remember what I heard
But what was it?
Marilyn Shepperson
http://www.poemhunter.com/poem/the-unseen-companion/