Greg and Emily are an example of an introvert-extrovert couple who love and madden each other in equal measure. Greg, who just turned thirty, has a bounding gait, a mop of dark hair continually falling over his eyes, and an easy laugh. Most people would describe him as gregarious. Emily, a mature twenty-seven, is as self-contained as Greg is expansive. Graceful and soft-spoken, she keeps her auburn hair tied in a chignon, and often gazes at people from under lowered lashes. Greg and Emily complement each other beautifully. Without Greg, Emily might forget to leave the house, except to go to work.