Deep enough to kill

I've let you down again
I just couldn't resist
The shine was so deadly
Let me fall in bloody bliss

It slid so smooth
And metal was cool
The warmth flowed though
Yes.. the warmth flowed

Too much though
Way too much
Weakness shoot down my body
I couldn't stand up

The strain wasn't enough
My eyes wouldn't close
My breathe wouldn't shorten
It only goes to show

The only wounds deep enough to kill
Are the ones on my heart