Please go away

How did this start?
Why can't it end?
Living with your smile
Burned into my days  

Now I live with your ghost.
She shakes her head and says
Not here, not today.
How am I supposed to let you go?

Do you live in agony
Of days gone by?
I wouldn't wish that on you
I hope you know.

Your smile kills me
A little more everyday
What did I do
To make it turn out this way?