Lyrics of Hollow Man - Rev Theory

I could walk all night
And never find what's right
Searching for some piece
To fill the void in me
Yeah, yeah

So, was it hard for you to go?
Did I fail to let you know
That you were the one I needed most?
Was it hard you leave?
Without a care for me?
It takes sometime to embrace the cold
Until then I'm just a hollow man

Steel frame in my mind
Has faded black and white
All that's left to say
15 Years too late

So was it hard for you to go?
Did I fail to let you know
That you were the one I needed most?
Was it hard for you to sleep
Without a care for me?
It takes sometime to embrace the cold
Until then I'm just a hollow man

What have I become?
The shadow of the sun?