Meg-John Barker is the author of a number of popular books on sex, gender, and relationships, including Queer: A Graphic History, How To Understand Your Gender, Enjoy Sex (How, When, and IF You Want To), Rewriting the Rules, The Psychology of Sex, and The Secrets of Enduring Love. They have also written a number of books for scholars and counsellors on these topics, drawing on their own research and therapeutic practice. Websites: rewriting-the-rules.com, megjohnandjustin.com.