Define "Heartache"

Hold you close and kiss your hair
All those memories, all so fair
I held your hand, you held my heart
And it ended, though it was just a start

A bloody death that painted the town
Dark red colors in which I drown
I held what used to be your hand
And the rest was scattered on the sand

Couldn't there be a different way
To keep that fucker in his place?
Was your existence so worthless to you
That you had to give it to follow through?

First to the scene, last to leave
The whole time I could hardly breathe
I grabbed your cloak, I grabbed your ring
And ran away with all your things

'What's the point?' I start to wonder
Without your voice I'll only blunder
Motionless for days, I lay in your bed
Sniffing the sheets of one who's dead

In unrelenting sadness I still wallow
And it's our footsteps I will follow
Going back to the place where we first met
And to the ones where secret dates were set

Was immortality worth this pain?
I can even say I've gone insane
Wherever you are, I'll nrver longer be
And from that scene I can never flee

If only you were not so blind
Behind this mask is a face so kind
Once you were gone it was all so clear
Living's not living without you here