Where in most couples, the characteristics in one are offset by the characteristics of the other; i.e. I suck at math.... I find it incredibly sexy that my partner does math in their head........

in THOSE two, the idiosyncrasies battle for superiority. If one is ill, the other gets MORE ill, if one is neurotic, the other must 'ramp up' to get any attention. And for the record, they are BOTH black holes of sucking need. No *doom crotch* pun intended. Seriously. It was unintentional.