I think that the most obvious coupling in Digimon that isn't actually directly implied in Calumon/Impmon, other than perhaps Renamon/Rika. So I decided to include a Calumon section to the site, since I think that Impmon should never be without Calumon. Evidence? Just watch Tamers! At first Impmon picked on Calumon, but he picked on everyone else, too. Later, though, he was always with Calumon, every time they showed him away from home, he was hanging out with Calumon, and he calles him affectionate names like "Creampuff". I think they make the CUTEST couple!
Calumon images!