Plot

When she discovers that Big is dating other women, Carrie realizes that she desires a monogamous relationship with him. In the meantime, Samantha is having trouble being monogamous with her realtors. Charlotte dislikes the sexual desires of her new boyfriend.—KGF Vissers

Samantha begins to look for an apartment to purchase. Her agent Pamela (Caroline Aaron) shows her a place that's pricey but has a wonderful view of the city. Pamela wants exclusivity, but Samantha is seeing apartments with Rick (Michael Dale) as well, who is also having sex with her.

Charlotte is dating Michael Conway (Jack Koenig), whom she met at the park. He is perfect in all aspects but one. He likes BJs and Charlotte doesn't like giving them. She has a very sensitive gag reflex and makes her want to puke. Miranda likes BJs till the time they want her to swallow. She says some men don't give her the choice. Samantha feels BJs give her a sense of power as you have them by the balls. The girls only give head to get head.

Miranda has successfully closed a big merger deal at her law firm.

Carrie and Mr. Big begin dating on a regular basis, but she learns after bumping into him, after she has lunch with her girls, that he is dating other women. Carrie is stunned. She wonders if monogamy has become too much to expect in modern day relationships.

Stanford introduces Carrie to Jared (Justin Theroux) who is a writer and is named as one of the hottest 30 under 30s. Jared invites Carrie to a party, but Mr. Big calls and books a date with her as well. Mr Big calls Carrie "Baby" and she tries to interpret if Mr Big was trying to make up for the dinner he had with the other girl. Mr Big takes her to the housewarming party of his old friend Max (James McCaffrey), where she meets many of Big's "conquests". Carrie is angry and leaves. She realizes that she had gone way out on a limb with her feelings and Mr Big was not at the same page with her. She goes to Jared's party. Jared wants to take Carrie home, but Carrie decides to call Big once. She calls Mr Big from Jared party and asks Mr Big to meet her at the Luna Park. Carrie says that she wants monogamy from Mr Big. He doesn't answer but acknowledges the question.

Skipper is dating another girl Allison and introduces her to Miranda and Carrie. Miranda is jealous and she calls in the middle of Skipper having sex with Allison. Skipper breaks up with Allison while he is still inside her. Miranda is shocked to hear what Skipper did. She wants something casual, but Skipper wants a monogamous relation. Skipper walks out on Miranda as he is tired of being messed around with.

Michael says he will have to break up with Charlotte if she won't give BJs. Charlotte has no option but to walk out. Michael gives up on a really great girl, who would stand by his side, care for him, share his hopes and dreams, all for the sake of a BJ. Rick shows Samantha an apartment that went on sale at midnight, and she is the first one to see it. She loves it and they have sex to celebrate. Pamela walks in on them having sex, with her own clients. She is angry that Samantha is working with another broker, Samantha is angry that Pamela wasn't planning on showing this apartment to her.