I understand this concept very well, yet haven't read it put in those words. He's absolutely right. Women obsess over the guys that put them on emotional roller coasters. Not the calm cool guys. It's good to be calm and cool at first, but like he said, constantly exposing them to those emotions makes them numb to it and they get bored. Ever been in a make up break up relationship? After so many break ups the couple just gets numb to it. Kind of the same thing. Cause it's insane to think people can be numb to a break up.