Just out of idle curiosity, how does each dual pair work? They have to have commonalities and if someone more knowledgeable on this subject would enlighten me it'd be greatly appreciated. Y'know, for theory confirmation reasons. If I know what it looks like I might be able to type others more accurately. Things like what they say to each other, how they present gifts, how they flirt, what they like and/or are willing to overlook, etc.