“Mustardseed grinned at Bertie. "I was never any good at geometry, but you’re stuck in a love triangle, aren’t you?" "Shut up," she ordered even as Moth asked, "But what if there were four of them?" "That’s a love rectangle, and five people would be a love pentagon." "And what are six people in love?" Cobweb demanded. Mustardseed thought it over a moment. "Manslaughter, I suppose.”
Book:So Silver Bright