A revolution is under way. Within a generation, more households will be supported by women than by men. In this book the author takes us to the frontier of this new economic order. She shows us why this flip is inevitable, what painful adjustments will have to be made along the way, and how both men and women will feel surprisingly liberated in the end. Couples today are debating who must assume the responsibility of primary earner and who gets the freedom of being the slow track partner. With more men choosing to stay home, she shows how that lifestyle has achieved a higher status, and the ways males have found to recover their masculinity. And the revolution is global: she takes us from Japan to Denmark to show how both sexes are adapting as the marriage market has turned into a giant free-for-all, with men and women at different stages of this transformation finding partners who match their expectations. This book is an analysis of the most important cultural shift since the rise of feminism: the coming era in which women will earn more than men, and how this will change work, love, and sex.