A New York Times Notable Book • NPR Best Book of the Year • People magazine Top Ten Books of the Year • BookPage Best Book of the Year • Good Housekeepi

Whether straight or gay, most men start their relationships desiring monogamy. This is rooted in the pervasive notion that monogamy exists as a sign of true lov

This text provides a groundbreaking look at sexual instincts and offers a clinical psychologist's and sex therapist's insights and solutions to the challenges o

Dr. Tammy Nelson is a relationship revolutionary. Her rethinking of monogamy—as a practice, a continuum, and a flexible concept—is on point, actionable, and

Through an investigation of sexual interactions and relationship forms that include more than two people, from polyamory, to threesomes, to the complexity of th