High Quality Content by WIKIPEDIA articles! "The Ex-Girlfriend" is the first episode of the sitcom Seinfeld`s second season on NBC, and is the show`s sixth episode overall. The episode first broadcast in the United States on January 23, 1991, after being postponed for one week due to the start of the First Gulf War. During the course of the show, George Costanza (Jason Alexander) breaks up with his girlfriend Marlene (Tracy Kolis). Later, he remembers that he left some books in her apartment and persuades his friend Jerry (Jerry Seinfeld), the show`s protagonist, to retrieve them. Jerry starts dating Marlene, but once she begins to annoy him as much as she did George, he finds himself unable to break up with her because she has a "psycho-sexual" hold on him.