Cupid.

She was shot by cupids arrow
You were the first thing that she saw
You don't deserve her
She deserves more.

Cupid must be loosing his touch
To give an angel to the likes of you
She might be an angel 
But remember I'm not 
If you hurt so much as one hair on her head 
I'll give you all that I've got.

Maybe cupid was right
Maybe she can change you
Maybe you can be good to her
And I'll give you that chance
But remember this
If you hurt her that will be your last kiss.