Of Shampoo and Fruit Flies

Dean's roommate is not what anyone would call ordinary. Cas is asexual, and autistic, and he frustrates other people with his unrelentingly 'childish' ways – but it's different with Dean: they have an exceptional bond, something truly profound. Dean figures Cas wouldn't respond to the idea of a crush the way most people would, so he has no intention of telling him he's been harbouring non-platonic feelings for him for years. Then one night everything falls to pieces: Cas overhears something he wasn't meant to hear. Things were never normal between the two of them, but now they might never be comfortable again.