Back on campus, Stanley finally meets and dates the classmate who is the object of his fantasies, Cathy (Dianne Hull). Cathy and Stanley fall in love, but she is a virgin and initially refuses his sexual advances, leaving him frustrated. Finally she agrees to sleep with him and the two settle into happy domestic life for a time, but Stanley soon becomes bored with the relationship and fantasizes about Andrea. When Cathy expresses concern about the promiscuous behavior of her chubby roommate Fran (Holly Near), Stanley invites Fran over under the pretext of filming her for an underground movie called Masturbation. He gets Fran drunk and films her in a variety of sexual positions, culminating with her masturbating in a bathtub, after which Stanley and Fran have sex. He initially feels guilty, but Fran comes to his apartment when Cathy is away and entices him into continuing the affair behind Cathy's back.
