He killed me with my own gun

No less human than I, I have to remind myself.
He has me backed into the corner again;
heated breath assaulting my face
Beyond irate, he's drunk to much
Cold metal touches my temple, pushing to hard
The solid barrel of a gun.
I know this 50 caliber so well, shot it many times
Never thought it'd be aimed towards me
Risking a glance into his face, I almost break
Once soft blue eyes, turned ice cold
I don't understand
He's going to kill me. That much I know.
If only I could realize why.
One free hand, he lights a cigarette
Smoke circles my face nauseating me
He exhales in my eyes
it burns
I can see the track marks lining his arm,
and I know this is it.
He's strung out, doesn't know what's real
Holding my breath, I close my eyes
And he pulls the trigger.