For some reason enneagram has been a pretty big constant for me in terms of personality (whereas Socionics has so many existential problems that it becomes harder and harder for me to take seriously in any way). But as a "triple withdrawn" tritype, any of the assertive types 3, 7, or 8, I'm usually drawn to (as long as they are healthy or good-intentioned or good-natured people). I've always admired people of those types to various degrees; compliments/criticisms are easy to accept and encouragement usually feels real and purposeful.

So that's probably true that withdrawn are drawn to assertives. But then I guess assertives are drawn to compliant types, so I guess this isn't really a dualizing idea when what you are drawn to is drawn to something you aren't. ...and that does sound pretty realistic actually.