band couple
Noun - When two band geeks, possessing little or no interest in one another, engage in a relationship for the duration of the marching band season, only to break up within two months after the last band competition.
Jack: Hey, did you hear that Angel and Billy are dating?
Jane: Yeah. They're just a band couple though. They'll be broken up by September.
Jane: Yeah. They're just a band couple though. They'll be broken up by September.