“…First, narcissists tend to be oriented toward sexual relationships (Hurlbert, Apt, Gasar, Wilson, & Murphy, 1994; Wryobeck & Wiederman,1999), an orientation that may lead them to seek sex from people other than their primary partners. Second, narcissism is positively associated with having an unrestricted sociosexuality (Jonason, Li, Webster, & Schmitt, 2009)—i.e., having more permissive attitudes toward casual sex (Simpson & Gangestad, 1991), which itself is associated with increased likelihood of infidelity (e.g., Mattingly et al, 2011). Third, narcissists hold relatively positive beliefs regarding their skills and abilities (Campbell, Bosson, Goheen, Lakey, & Kernis,2007; Morf & Rhodewalt, 2001), beliefs that may lead them to think alternative partners will accept and benefit from their sexual advances.…”