what am i....

He saw her face....
As she turned and swayed...
Time slowed as though...
That it was on hold...
Sadden and dismayed,
She took her bag and left away...
He knew and couldn't react...
But sat there and turned the car back...
He turned the radio blank...
And started his long silent journey back...
He clearly knew it was his fault...
And he never gave her a thought...
He felt an aching pain...
That no physical blow can substain...
It's a place where there's no physical heart...
But good enough to tear him apart...
He wondered what he is...
To not be able to express how he thinks...
To let her wonder...
Until there's showers and thunder...
And till this time he's still awake...
knowing that she is awaits...
So that he can muster up the courage...
And stop making the damage...