How Common Is Consensual Non-Monogamy? - Sex and Psychology

Consensually non-monogamous (CNM) relationships are those in which all of the partners involved agree that having sexual and/or romantic relationships with other persons is acceptable. CNM relationships can take many different forms, including polyamory, swinging, and open relationships, and it is important to note that people may negotiate the rules and boundaries of these relationship structures very differently. One of the most common questions people have about these relationships is how common they are and who enters them. Let's take a look at what the research says.