coolidge effect

is tendency to feel renewed sexual interest (in animals and humans) when introduced to new receptive sexual partners, even after cessation of sex with prior but still available sexual partners.

In biology and psychology, the Coolidge effect is a phenomenon seen in animal species whereby males (and to a lesser extent females) exhibit renewed sexual interest if introduced to new receptive sexual partners, even after cessation of sex with prior but still available sexual partners. The evolutionary benefit to this phenomenon is that a male can fertilize multiple females. (wikipedia)

coolidge effect, n.Definitions

coolidge effect