We've always done it, we're still doing it. Straight, queer, coupled or uncoupled, none of us live outside the cultural and psychological influence of marriage and all of us are written into its story. But why this highly contested and ancient practice has remained relevant to so many is by no means certain. Is it an act of love, a leap of faith, a holy bond, a contractual commitment, a bid for security, a framework for family, a hedge against being alone? Or could its traditional cover conceal something a bit more radical? Why do we do it at all? Drawing on philosophy, film, fiction, comedy, psychoanalysis, music and poetry, Devorah Baum considers the marriage plot. What are we really talking about when we talk about marriage? And what are we really doing when we say, 'I do'?