Jane and Richard, who used to date, must re-evaluate their relationship as new stepsiblings; jealousy arises when they each have study partners of the opposite sex. Susie can't decide whether to date Sam or Elvis so she dates both, which works fine until they run into each other and she must come clean. Beth dumps Helen while hot-tubbing.

Jane and Richard plot to use Kurt and Audrey as their "beards" so they can keep dating; they plan to have sex for the first time. Sam and Elvis agree to share Susie, then they play pinball to see who will be with her for the night. Susie decides to find out how they really feel about her and says she wants a three-way commitment. Clark warns Zia to protect herself from Helen's strange and aggressive rebound behavior. Helen massages Zia with Ben Wa balls and Zia tries to make sure their relationship is for real.

Jane and Kurt and Audrey and Richard have a double date where they play with "dirty dice." Kurt and Audrey discover a photo of Richard and Jane kissing. Susie tries to see how much Elvis and Sam like her by seeing how far they will go with each other -- she tells them they have to kiss. Zia tries to get Helen to think about something besides sex, then Beth returns and says Helen's just using Zia to get over her. Zia tells Clark he fantasizes about lesbians to avoid getting involved in a real relationship.

Jane and Richard try to have sex, then decide to stay best friends instead. Susie, Elvis and Sam set up rules for their relationship, which Sam and Susie break, then Sam confesses to Elvis and Susie and Sam have to make up with him. Helen's confused when Zia invites Beth to stay for dinner, leading to a confrontation between Helen and Beth and resulting in Helen and Zia staying together.

Paula arrives, sparking competition between brothers Michael, Kurt and Jim. Jim asks for Michael's help in keeping Kurt out of the picture. Foster wigs out when he finds that Andrea practices abstinence. Susie and Andrea take off their underwear to get Wade's attention, unaware that Wade is Foster's roommate who plans to seduce Andrea. Philip freaks and runs off when Lucy tells him she's a virgin, so Lucy's roommates Thea and Diane hire Leo to devirginize Lucy.

Jim asks Michael for help in keeping Kurt away from Paula, only to find out Michael is after Paula, too. Kurt suggests calling Michael's girlfriend, Kimmy, to bust Michael. Wade tells Foster how he plans to seduce Andrea, but ends up freaking out and making a run for it once he and Andrea start messing around. Lucy and Leo have sex, but Thea is interested in Leo and Diane says he's off limits.

Jim tutors Paula in kissing, then Jim and Kurt bust Michael while he's in the bathroom and Paula's in the tub. Wade lies to Foster about his success with Andrea. Foster tells Andrea and Andrea plots vengeance. Leo agrees to talk to Lucy if Thea will go out with him, then Lucy is destroyed when she sees Leo and Thea kissing in the elevator.

Paula asks Jim if he can do the boyfriend thing, then Paula says goodbye to all the brothers with a special kiss for Jim, much to Kurt and Michael's surprise. Foster tells Wade that he confronted Andrea, so Wade challenges Andrea to strip in the lounge for every lie they've told. Wade and Andrea make up and decide to have a relationship without sex. As Thea plans to move out to save her friendship with Lucy, Philip returns and he and Lucy reconcile.

Kimmy tells Gale that she's late, then they watch a homework assignment with the boys, a video called "I Was a Teenage Mother." Keisha and Haskell try to make up, and but Haskell decides he can't deal with the "new" Keisha's adventurousness. Victor's conservative girlfriend Brenda tells him they need some time apart, then Renata reveals that she knows about his escapade in her panties and will keep his secret -- for a price.

Skeet gives Gale his class ring, but Gale feels suffocated and winds up breaking up with him, then she gets together with Mitch. Kendra and Dean almost reconcile in Dean's room, but Angie surprises them and Kendra leaves Dean and Angie alone. After all Elyse's prodding, Nicole finally invites Dirk over, but he winds up asking Elyse out.