Promise.

Lie; A type of deception in the form of an untruthful statement with the intention to deceive, often with the further intention to maintain a secret or reputation, to protect someone's feelings from getting hurt, or to avoid punishment.

Your promises, they look like lies
Your honesty like a back that hides a knife

Slash. Quite personal.

Maybe one day I'll say why.

Disclaimer; I do own My Chemical Romance. They're under my bed right now, having hot steamy boy-love. I'm about to join them.I wish.