What did I do wrong?

I can see your face
In the puddle on the ground
Laughing at my hurt and pain
When I lost the love I found.

Your face is surrounded by my red blood
Your eyes are glearing with hate
Your mouth is twisted and evil
I thought what we had was fate.

Now I'm slitting with broken glass
Hacking at my wrists
Trying to end my life and let
out the pain my heart consists.

But you're still haunting me
Even after you're gone
So before I breathe my last breath
Through my blood tell me what I did wrong.