What did I do this for?

Kate

What did I do this for?
All I wanted was something more,
Now you lay on the floor.
Broken and scarred.

Blood covers your body,
Your soul has already left,
All I feel is regret.
It's because of me that your dead.

I killed you,
Because I couldn't protect you,
It’s all my fault.
That you're no longer by my side.

I'm so sorry my love,
I'm weak and you are strong,
It feels like the worlds frozen over,
Since you left forever.

Nothing I can do will get you back,
I'm left here alone,
Without you to hold.
Is there anything I can do, 
To have you by my side once more?