There is a sort of symmetry to his pairing with Caleb that makes sense: they are the damaged and the damager, the sliding heap of garbage and the jackal sniffing through it. They exist only to themselves—he has met no one in Caleb’s life, and he has not introduced Caleb to anyone in his. They both know that something about what they are doing is shameful. They are bound to each other by their mutual disgust and discomfort: Caleb tolerates his body, and he tolerates Caleb’s revulsion.
