It's a running gag in Seinfeldthat the main characters are constantly breaking up with their romantic partners for silly and shallow reasons. Though Jerry Seinfeld has quite the volume of girlfriends in the show about nothing, most don't stick around for more than a couple of episodes, and he and his friends are more or less perpetually single. While sometimes it's the partners themselves who do the dumping — and usually for very good reasons — more often than not, it's one of the core four who ends the relationship.