The Heart Breaker.

Girl:Valentine cookies! who wants one?
Boy:I do! I do!
Girl:Okay, but don't eat it, if you do you'll break my heart.
Boy: I promise, I won't.

A couple of months went by, the girl had a boyfriend and was in love. The boy kept his promise but then he went on a trip. The plane crashed and he was stranded. All he had was the cookie, so he ate it. The boy died after a bite because the cookie was poisoned. The girl's heart broke when she found out her love, died because of her heart. Then every Valentines day she only gave out cards, so no one will get hurt, especially her.