The Law of Conservation of Energy by peroxidepest17
Title: The Law of Conservation of Energy
Author: peroxidepest17
Pairing: Castiel/Dean Winchester
Genre: Angst, Romance, AU After Late Season 6
Rating: PG-13
Word Count: 90,030
Summary: The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one state into another. And what is