“Studies find that about one in five persons has had an open relationship, the same proportion of the population that owns cats, according to Moors. Think about the number of people you know who have a feline for a pet. A similar number of those in your social circle have probably engaged in consensual non-monogamy at some point in their life.” https://www.psychologytoday.com/au/blog/talking-apes/202305/consensual-non-monogamy-fact-and-fiction