the matrix? right on, dude; that was a cool movie! (link please?)
i did find this:
It should be emphasized that there are no right or wrong attractions; in individual cases, any temperament can be attracted to any other, and for all sorts of reasons. On the other hand -- and this is said cautiously -- more than four decades of people-watching (I began observing character styles in 1956) reveal that romantic attractions are not random and indiscriminate, but show clear patterns and frequencies. In other words, persons of certain temperaments tend to be attracted to persons of certain other temperaments, and if they botch up the mating somehow, they are likely to be attracted to, and again marry, another person of the same temperament as their first mate.