Originally Posted by
MaidenMinx
OK here's an out of the ballpark idea for you.... maybe he simply isn't able to talk about things that don't interest him 100%. Maybe he has trouble expressing opinions before he has thought them through properly.
It sounds to me like he's rather aloof and you are a bit of an interrogator. This is not a bad thing if you can see it for what it is. Read the Celestine Prophecy, or atleast the chapter on energy struggles.
OR here's another possibility, he may fall somewhere on the Autism spectrum, somewhere near aspergers maybe, which means that he would actually have a neurological impairment that makes it very hard to talk about things that don't interest him.
All food for thought.