Resurrection of Eve

Resurrection of Eve is a 1973 American featurelength pornographic film produced by the Mitchell brothers and starring Marilyn Chambers, who had become a star in the Mitchell Brotherss previous picture, Behind the Green Door. Resurrection of Eve was directed and written by Jon Fontana and Artie Mitchell. Though less successful commercially and critically than Behind the Green Door, it is considered one of the films of The Golden Age of Porn. Like Behind the Green Door, it featured interracial sex, including a reprise of Chambers coupling with her Green Door costar Johnnie Keyes, but broke new ground in a film targeting a heterosexual audience by included shots of gay fellatio.

After Eve returns home, Frank suggests they attend a swingers party, and she reluctantly agrees. At the ensuing orgy, Frank happily enjoys the charms of a friends wife, but Eve is horrified by the hedonism and they fight afterwards. Frank berates her for harboring sexual inhibitions and blamed for trying to make him feel guilty. The browbeaten Eve decides to try swinging again.After attending a couple of more swing parties, a rolereversal begins to take place. Eve becomes an enthusiastic swinger, and Franks jealousy comes out at a party in a 1950s themed party in which he sees his wife fellating an African American. Frank becomes the reticent partner as Eve becomes unfettered sexuality, and he loses his control over her. At an orgy featuring all manners of sex, gay, straight and interracial, Eve couples with an African American gentleman while the jealous Frank watches. She announces after coitus that she is leaving Frank. The second resurrection of Eve is complete. ........

Source: Wikipedia