All a late night host needs for an affair is a fold-out couch and a kitchen in his office. The New York Post reports that David Letterman has a secret bachelor pad inside his office in the Ed Sullivan Theater. The pad is "off limits to pretty much everybody" according to a Late Show insider, and if Letterman invited a paramour round, "she wouldn't be noticed coming on or out, or seen as something strange because she worked there." Last week, 48 Hours producer Robert "Joe" Halderman was arrested for allegedly blackmailing Letterman for $2 million. Letterman admitted on air to sleeping with staff members.