Non-monogamy

[6][7][8] In contemporary discourse, non-monogamy is understood to encompass a variety of practices, ranging from culturally institutionalised arrangements like polygamy to consensual agreements such as open relationships and polyamory, as well as non-consensual forms like infidelity.

These distinctions allow non-monogamy to be broadly categorised into three major forms: It is important to note that the above-described categories are not mutually exclusive or collectively exhaustive as individual experiences often diverge from standard definitions due to the intricate nuances inherent in the complexity of human sexual relationships.

[19][23] The fluid and complex nature of human sexual and romantic relationships allows for diverse expressions that may not fit neatly into a single category, with subtle nuances often blurring the boundaries between these forms.

For example, in France and Germany, polygamy is not recognised under civil law, and attempts to enter into such unions can result in criminal charges, denial of marital benefits, or annulment of subsequent marriages.

In April 2018, the Newfoundland and Labrador Supreme Court in Canada recognized three adults in a polyamorous relationship as the legal parents of a child, marking a significant precedent in family law.

[61] Similarly, in June 2020, Somerville, Massachusetts, became the first U.S. city to adopt an ordinance permitting domestic partnerships involving more than two adults, thereby legally recognising CNM relationships.

[68] This can be explained by the fact tha CNM individuals tend to prioritize open communication and explicit agreements about sexual boundaries, which often include discussions about safer sex practices.

While some research indicates more positive attitudes toward polyamorous relationships,[69][70] emphasising emotional and romantic connections, other studies suggest that swinging or group sex, which focus primarily on sexual activity,[71] are viewed more favourably.

Factors such as societal gender norms, power dynamics, and the perceived acceptability of infidelity within certain contexts (e.g., among men versus women) influence attitudes toward non-consensual non-monogamy.

This includes both partners wanting their relationship to remain primary, the couple having an established reservoir of good will, and a minimum of lingering resentments from past hurts and betrayals.

[73] A shared agreement on the decision to pursue non-monogamy, along with a sense of equality and autonomy between partners, is also crucial in building trust and navigating the complexities of a non-exclusive arrangement.

[73] While it is tempting to categorise non-monogamy in broad categories, human relationships are complex and multifaceted with many terms emerging to reflect the nuanced nature of non-monogamous arrangements.