“Non-monogamy has been around throughout civilisation,” says intimacy and sex coach, Dr Lori Beth Bisbey. “The term ethical non-monogamy has appeared over the past 15 or so years as a way of differentiating ‘cheating’ from chosen non-monogamous relationships. Consensual non-monogamy is the preferred term these days because it highlights consent, which is crucial to these relationships working.” https://www.cosmopolitan.com/uk/love-sex/relationships/a43874516/what-is-ethical-non-monogamy-enm/