A jaw-dropping re-evaluation of everything we thought we knew about men, women, and sex.

Since the dawn of civilisation, we have obsessed over women who cheat. From ancient Greek tragedies to tabloids and TV dramas, our appetite for the appetites of promiscuous women is nearly insatiable. They fascinate, engage, and outrage us sometimes all at once. But why, in this age of celebrated female autonomy, empowerment, and sexuality, do we continue to judge and condemn female cheaters so harshly while giving their male counterparts a pass? The answer is more complicated than it seems and it is wrapped up in fundamental misunderstandings of female sexuality that are as old as humanity itself.

In Untrue, author and social researcher Wednesday Martin explores what we've been getting wrong about unfaithful women and the evolutionary impulses behind their desires. Blending personal stories from Martin's own history with accessible social science, cultural theory, and interviews with sex researchers, psychologists, primatologists, anthropologists, and real women from all walks of life, Untrue reveals startling insights about female sexuality, and challenges our deepest assumptions about ourselves, monogamy, and the women we think we know. From recent scientific findings suggesting that women struggle more with monogamy than men do, to the revolutionary idea that women evolved to be ‘promiscuous,’ Untrue will change the way you think about women and sex forever.

‘Scientifically literate and sexually cliterate … an exuberant unfettering of female sexuality that challenges us to ‘think outside her box.’ Viva la Vulva!’ Ian Kerner, Sex Therapist and Author of She Comes First

‘If you have ever felt different, other, or just weird when it comes to love, sex, or intimacy, read Untrue. Wednesday Martin bulldozes the sexual stereotypes that have silenced women for eons. By bringing the voices of women who love in a range of ways to the surface, she shows us all that it's not us and our desires that are abnormal: it is a system that has constrained and shamed women. I love this book.’   Rachel Simmons, Co-Founder of Girls Leadership and Author of Odd Girl Out

‘Wednesday Martin understands female sexuality – from the #MeToo movement and polyamory to women's prehistoric and cultural heritage. She goes far beyond our current psychological understanding of women's infidelity to tell the real story of women's ubiquitous, tenacious, and primordial sexual strategies. And her writing is not only informative, timely, and refreshing but wonderfully engaging. Brava, Wednesday.’ Helen Fisher, Author of the First Sex and Why We Love