I think not many people mention MLC because they don't know what it really is. It's not the sports car, secretary thing that so many people have heard poked fun at. It goes oh so much deeper than that.
I believe that people going through deep MLC display many of the same types of characteristics that you do see in narcissists and sociopaths.
IMO, I'm not sure people that are truly this way could hide it so well for years without their partners at least having some idea of who they're living with. (I also think there could be exceptions)
It's why so many LBS report that their MLCers are the opposite of the person they married.
