“…This seems especially likely to be the case for extradyadic romantic relationships which may pose a threat to the existing relationship above and beyond other activities a partner can engage in (e.g., catching a movie with a friend). For example, research has shown that when people imagine (Harris, 2000;Thompson, Zimmerman, Kulibert, & Moore, 2017) or discover (Edlund, Heider, Scherer, Farc, & Sagarin, 2006;Kuhle, 2011) a partner's extradyadic romantic involvement they often engage in behaviors like mate guarding (Buss, 2002;Buss, Shackelford, & McKibbin, 2008), and report negative emotional experiences like jealousy (AlShawaf, Conroy-Beam, Asao, & Buss, 2016;Buss 2000 for a review of research), which may help to prevent the potential loss of a romantic partner.…”