Recognition Of ‘Polyfidelitous Closed Quads’ And ‘Throuples’ Could Change Marriage For Everyone

Whether it’s a “monogamous triad,” a “polyfidelitous closed quad,” or a “throuple,” like in the case of former Rep. Katie Hill, D-California, many Americans — 4 to 5 percent of the population — are embracing the free love lifestyle of polyamory.