A romantic association between two people where one or more of the parties involved refuse to call it a "relationship", or use the words "girlfriend" and "boyfriend" for fear of attachment or commitment. The behavior of those involved is identical to an actual relationship, except commitments and expectations are not explicit but merely implied. Often defined by social networking sites as "its complicated".
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi