Care for her

I write this now,
As my last request,
I want you to take care of her,
I really tried my best;
But I regret to say,
I didn't succeed,
All I caused her was pain,
And made her arm bleed.
So I feel it's best,
That she's with you,
She no longer needs my abuse;
She never did,
And I knew that,
But I guess I couldn't stop hurting her.
Tell her I'm sorry,
Make sure you do your best,
For the moment you fuck up,
I'll rip your heart from your chest;
That's not a threat,
I promise it to you,
The only reason I say it,
Is because I fucked her up enough,
She needs no more of it,
I scarred her with my touch.
So take care of my love,
She deserves it so much,
And again please tell,
For her sadness to hush;
She needn't feel it,
Or express it for me,
I was never worth her time,
Tell her that she's free.