I question his ability to build strong long-term personal relationships - it seems his obsession with the self & improvement would likely impede the development of meaningful friendships.
Tim is a friend of mine. It's hilarious how many people take public blog posts, video presentations, etc and assign all these deep meanings to them (i.e., he can't "build strong long-term personal relationships").
From their recent "podcast demo" (http://vimeo.com/3934635) they did appear to be close.
I'm sorry you guys think this is trolling - but seriously, how does one dedicate their life to learning a new skill for three months straight when they have a family or close friends who depend on them? Its honestly something I struggle with when looking for guidance from guys like Tim.