This may be fun. Which are the strange couples that you know about? I know some...
-Both are friends of mine. He is a very radical guy in some of his ideas; he was a punk in his old times. On the other hand, his wife is (almost literally) a hippie. Punk + hippie!
-She is a Colombian woman, and he is from Austria. Both are living in Barcelona. He, the Austiac guy, plays in a "flamenco fussion" band!
-Two lovely women, maybe in his sixties. It's no official, but everyone imagines that they are a couple. No very usual in people of her age.
Who do you know?