Carrie's smoking becomes a problem when she goes on her first date with Aidan Shaw. Miranda makes more time for Steve in her life. Charlotte dates the worst kisser she's ever met. Samantha dates a black man whose sister is racist.

Carrie wants to sleep with Aidan, but he's reluctant to rush into a physical relationship. Miranda discovers she has chlamydia and has to inform her past sexual partners. Charlotte's new boyfriend calls her names during sex. Samantha's neighbors disapprove of her sex life after a late-night visitor lets in a burglar.

Carrie obsesses about her perfect relationship when Aidan suggests she meet his parents. Miranda enjoys her intimate life with Steve. Charlotte gets upset when a married friend won't set her up with his bachelor buddy. Samantha tries Viagra while sleeping with a doctor.

Carrie runs into Big who confesses that he misses her and can't stop thinking about her. Miranda gets annoyed with Steve's childish habits when he suggests they have a baby together. Charlotte falls in love with Trey after only a few weeks of dating and is convinced he's "The One". Samantha believes she's hit menopause when her period is a week late.

Big tells Carrie that he's leaving his wife. Miranda deals with her breakup and Steve moving out of the apartment. After meeting the MacDougal family matriarch, Charlotte maneuvers Trey into making an "alrighty" proposal. Samantha is upset when dating a hot guy with "funky spunk".

Carrie feels guilty and wants to quit her affair with Big. Miranda enjoys phone sex with a co-worker from Chicago. Charlotte negotiates the terms of her prenuptial agreement with Trey's mother, Bunny. After celebrating her move to the new apartment in the exclusive Meatpacking District, Samantha's bout of the 'flu gives her a pessimistic outlook on life.

Carrie continues her affair with Big, and tells Samantha after a girly night and Miranda after a drink on their cocktail night. Charlotte finds out by accident, when she bumps into them on the street together. No longer meeting in hotels where nobody knows them in to avoid getting caught,Natasha comes home early from the Hamptons catching Carrie in Big's apartment. She chases Carrie out, falls down the stairs and cracks her tooth. Carrie takes her to A&E where she tells Big "they are so over they need a new word for over". Miranda tries continually to get Carrie to end her affair. Charlotte hires stylist Anthony Marentino to help her find the perfect wedding dress. Samantha meets the "male version of herself", but he refuses to sleep with her because she hasn't had an HIV test.

Carrie struggles to find the right time to tell Aidan about her affair. Miranda tells a guy she's a stewardess in hopes of getting a date. Charlotte has her dream wedding and marries Trey MacDougal—even after attempted late-night tryst reveals Trey's serious shortcomings. Cunning linguist Samantha sleeps with Trey's Scottish cousin, despite being unable to understand him.

Carrie meets with Big for the first time since his marriage ended. Miranda gets frustrated when she thinks the Chinese take-out girl mocks her stay-at-home lifestyle. Charlotte moves back into her old apartment and gets an up-lifting visit from Trey in the middle of the night. Samantha feuds with the raucous transsexual prostitutes who conduct business outside her apartment at two in the morning.

Carrie gets an invitation to the opening of Steve—and Aidan's—new bar, Scout. Miranda thinks she has a ghost in her apartment. Charlotte butts heads with Trey's mother, Bunny, when redecorating their apartment. Samantha's girlfriend Maria gets fed up with the many, many men from Samantha's past.

Carrie realizes she wants to get back together with Aidan. Miranda gets a surprise when she sleeps with "marathon man". Charlotte and Trey decide to start trying to have a baby. Samantha uses fake nipples and attracts a man who uses "baby-talk" during sex.

Big calls Carrie—while she's having sex with Aidan. Miranda throws her neck out after fighting with Charlotte. Charlotte decides to leave the gallery to pursue motherhood full-time. Samantha's latest guy tells her she needs to shave below the belt.

Carrie's laptop crashes, and when Aidan tries to help, she pushes him away. Miranda's mother dies unexpectantly, but at the funeral, her family is more upset by her single status. Charlotte becomes the "Martha Stewart of funerals". Samantha "loses" her orgasm.

Carrie is dragged to Aidan's country home in Suffern, New York. Charlotte visits the MacDougal "compound" in Connecticut. Miranda yells at Steve when he tells her he has testicular cancer but has no clue about his condition. Samantha gets annoyed when her dates keep asking her what she's doing "next weekend".

Carrie invites Big up to Aidan's country home to talk. Charlotte tries to discuss her and Trey's infertility problems. Miranda sleeps with Steve to cheer him up after he has one of his testicles removed. Samantha tries to get the PR position for hotelier Richard Wright.

Carrie is reluctant to tell Aidan that she had an abortion when she was 22. Charlotte discovers she only has a fifteen percent chance of getting pregnant naturally. Miranda finds out she's pregnant by Steve, and debates whether or not to keep the baby. Samantha gets Lucy Liu as a client and tries to use the relationship to her advantage.

Aidan proposes to Carrie. Charlotte discusses adoption with Trey, but hits a wall when Bunny finds out that the baby could be Chinese. Miranda tells Steve she's having his baby. Samantha starts sleeping with her boss, Richard Wright.

Carrie and Aidan have a huge fight over the clutter in her apartment after Aidan moves in. Charlotte and Trey have a huge fight when he brings home a cardboard baby as a gag gift. Miranda goes on a date despite being pregnant. Samantha finally gives in to Richard's romantic overtures.

Carrie finds time away from stay-at-home boy Aidan with a gay Aussie shoe distributor at the exclusive Bungalow 8. Charlotte and Trey separate permanently after their apartment is photographed in House & Garden. Miranda accidentally outs her co-worker after he tells the office gossip that she's pregnant. Samantha tells Richard she loves him while high on ecstasy.

Carrie freaks out about marrying Aidan. Charlotte takes tap classes, and has a meltdown during the "Tea for Two" number when she realizes she isn't ready to be alone after her divorce. Miranda must feign excitement when she learns her baby's sex. Samantha finds out Richard is seeing other women, and pushes him to be monogamous with her.

Carrie is forced to buy her apartment back from Aidan or move out. Mr. Big writes her a check as a loan, but she doesn't know whether she should accept it. Charlotte doesn't know what to do with her engagement ring. Miranda has to refurbish her wardrobe after gaining pregnancy weight. Samantha tries to trick Richard into saying he loves her.

While nervously anticipating her first date with Berger, Carrie runs into Aidan for the first time since their breakup, and is surprised by how far he's moved on. Miranda realizes she's in love with Steve—only to hear he has a new girlfriend. Charlotte struggles with Harry's assertion that he can only marry a Jew. Samantha sleeps with a stockbroker who gives insider tips while inside her.