“…Several theories of jealousy predict that relationship commitment and the attractiveness of relationship alternatives should interact to facilitate the expression of jealousy because to the extent that individuals are more committed to their relationship and perceive that they have unattractive dating alternatives, a jealousy-evoking situation should be perceived as especially threatening to the self, to the relationship, and to the emotional, temporal, and material investments put into the relationship (e.g., Bringle, 1991;Bush, Bush, & Jennings, 1988;Buunk, 1991;Hansen, 1991;Radjecki-Bush, Farrell, & Bush, 1993;White, 1981White, , 1991White & Mullen, 1989). Although men and women react differently to threat, evolutionary theory predicts that cognitive mechanisms are activated when a romantic relationship is threatened (e.g., Buss, 2000).…”