Oh I dunno, if you go to matches together, do you sit together?!?!
(I live a North American equivalent, I'm from St. Louis [Cardinals 1126, Blues 125/42] and my hubby Chicago [Blackhawks 161/42, Cubs 1180].. Though now that we live west coast, we don't haveta watch our respective teams play versus live, but even so, people look at us funny cos when we go see my beloved hockey team play, he wears the jersey of his. Yeah and I wear Blues gear at his Blackhawks.)