A Child's Wrath

A ten-year-old boy develops feelings for his best friend, but they already have a girlfriend so he has to learn to let go, later on, he starts to have violent thoughts about certain things, for example; "How do you cook human flesh without it burning too much?" Or "I swear if they don't stop talking I'll rip them apart limb from limb and stuff him into a blender and sell it as smoothies."
The madness went on and no one could do anything about it, until one day, he snaps...