Susan invites Steve for a date at home, and offers to cook. Jeff warns him about 'The Sock Gap', and Patrick alerts him to her collection of remote controls. Somehow everyone's conversation seems to revolve around Patrick's size, and Jeff is asked by several people to accompany him to the toilet to check.
On average, men and women think about sex every six seconds. Shorten that to every second, and you've got Coupling.
This series centers around Susan and Steve (who are a couple), and Sally and Patrick join the gang as friends of Susan (and then Steve), while Steve pulls in his best friend Jeff and his crazy ex Jane.