The Secretary (1972)

A contemporary comedy-drama set against the background of rich southern elegance and the permissive swinging singles society of today. A successful young stockbroker, whose business is financed by his father-in-law, is frustrated by his wife's coldness. When an old friend from college, who teaches tennis to attractive young women and bored housewives, suggests that the stockbroker seek solace outside his marriage, the stockbroker begins an affair with his secretary. Meanwhile, the stockbroker's wife has an affair with her husband's old college friend.