Who are you exactly?

Who are you exactly?
As time goes by, I just remember your smile
Slowly but surely, I forget your face
I just remember a little thing about you
Just your figure, your move, your body, your blackberry, your shoes
Just from the back...
Yeah, I love watching you from the back
But sure, I don’t know your name
I’m still curious about you
Maybe someday I can forget you
Or maybe we can meet...
But we already forget each other, especially for me
Maybe you have been married, have your own children
But I’m afraid that I cannot forget you
And I’m stuck here

Pity