" That feeling in your stomach when you hear him whispering off-key, down the hall. That way your heart trips and then hammers against your ribs when he sees you and he grins like a little kid at the top of a steep, shiny-hot slide. Call it hormones, an early-stage bacterial zombie infection, or a very pleasant dream I was experiencing; I didn't care. I liked That. "

― Laurie Halse Anderson , The Impossible Knife of Memory