Am I insane? Or have I gone mad?

I wonder if you know you hurt me
I wonder if you even care.

And then I remember,
you're not really there.

I've killed you,
Have I gone mad?

I simply wish to go back
to the life that we had.

But you're not here.
You're not there.

It's simple really
you're not anywhere.

I killed you, took your life away
And I don't even care..

Am I insane?
or have I gone mad?