Why?

I sat here on this hard bench,
in this cold park,
Waiting for you.
The rain poured over my face,
it was wet and windy,
Waiting for you.
Then he came.
Dressed in black.
I was cold and wet.
Could you have waited?
No... I screamed for help,
you were there.
You didn't help me,
you left me to die,
you splashed me with water as you passed.
I lay there gasping for breath,
you went on
I asked why?
you never answered.
Why.