" Well, there are always two dancers in two circles," Alan said, and went a little red. "Usually a girl and a guy dancing side by side. It's often couples, because, um - the demons are attracted to strong feelings, and the fever fruit lowers inhibitions, and, er-"It's all very Magical Circle Dancers Gone Wild," Nick interrupted, and tucked his knife away. "
― Sarah Rees Brennan , The Demon's Lexicon