Boy, I sure wouldn't want to date a person like this (your girlfriend-at-the-time).

Human beings are complex creatures, and the decision to date a person involves weighing up the different elements that make up that complexity. At the risk of sounding presumptuous, 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. (Perhaps a focusing illusion--"nothing in life is as important as you think it is, while you are thinking about it"--was involved in causing you to believe otherwise.)

ETA: After reading the replies below, I realize I had misinterpreted Said's comment above as making an all-things-considered claim, when it fact the claim was supposed to be subject to a ceteris paribus clause.