"Kill him." you said, with a smile on your face. 

"Okay." I said, and stabbed him in the heart.

I've always been this way, you know? I forgot all my reservation when I saw that smile of yours. Deadly and beautiful, like a black mamba about to strike. How could I ever refuse that smile? I would lie, steal, extort, even murder, for that smile. I would do anything for you when you smile at me that way. Anything.

I forget every one of my qualms and do your bidding without hesitation, and all for that smile, that terrifying yet lovely smile.