Carnal Knowledge is a 1971 American drama film directed by Mike Nichols and written by Jules Feiffer. It stars Jack Nicholson, Art Garfunkel, Ann-Margret, Candice Bergen, and Rita Moreno.

Plot

In the late 1940s, Amherst College student Sandy meets a coed named Susan at an on-campus event and they begin dating. Although they enjoy each other's company, Susan is reluctant to enter into a physical relationship. Unbeknownst to Sandy, she is also pursued by Sandy's aggressive, womanizing roommate Jonathan, and they eventually have sex. Jonathan tries to persuade Susan not to have sex with Sandy, but after some delays, Susan does sleep with him. Because of this, Susan and Jonathan break up.