As I was reading through @Ocha's beautiful related topic, I realized that I couldn't include a lot of my personal favorites because, in their universes, they weren't couples. Obviously, this can't be allowed to continue! Our favorite un-couples must have their time in the spotlight! Who is to say that our imaginations haven't made some beautiful parings? So, denizens of Iwaku, who are your favorite un-couples? Which characters never actually get together in their own universe, but are free to frolic in your imagination? Which characters really should have cashed in on that chemistry?