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

Plot

In 1946, Amherst College student Sandy meets a Smith College student 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, Susan 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. Jonathan pressures Susan to break up with Sandy; then breaks up with her as well.