Based on an exhaustive survey into the lives of real people, "Swinging in America: Love, Sex, and Marriage in the 21st Century "concludes that nonmonogamous relationships such as swinging and polyamory offer a new blueprint for combining sex and love one that may prove more in line with the way people actually live their lives in our society.

"Swinging in America" begins with what we know about swingers and the swinging lifestyle, based on personal narratives and over 40 years of sociological research comparing swinging and non-swinging couples on factors such as personal happiness,...