When?

This is just imagination, I made it up and the pain expressed is augmented for effect

When did the pain stop?
As my back was turned to the sun?
Empty, hollow, lost I remain,
For I had you and now I only have this gun.

When did the pain end?
As I closed my eyes to wipe away the last tear?
There is no end except through the darkness;
The darkness of the barrel, my final fear.