I'd say that in your current state of almost total ignorance about the physical and psychological traits of Chris's ex girlfriend, you are simply not in a position to know whether or not you'd want to date her.

It seems this objection could largely be ameliorated by the inclusion of a ceteris paribus clause. Or, given the way you phrased it, perhaps a measure of how just how many units on the Craziness/Hotness scale the behavioural pattern moves her.

EDIT to remove references to mythical three headed guardians of hades.