When it comes to relationships, how do you know when enough is enough? Big tells Carrie that he's moving to Paris for six months; Samantha introduces the girls to the hottest new S&M restaurant; Charlotte's shoe fetish is counterbalanced by a shoe store foot fetishist; Miranda meets a guy who likes to "do it" only when he thinks he might get caught.

Are the girls doomed to repeat the same unconscious relationship partners and date the same person over and over? Carrie makes a date with her "fuck buddy"; Samantha "makes love" with the couple next door -- with a wall between them; Charlotte starts double-booking dates with men; Miranda dates a very mean and controlling man.