It almost sounds like mild autism. That would make a LOT of sense in both cases. From my own experiences with autism (nephew), he has difficulty expressing his own feelings and recognizing the feelings of others. It's like he has feelings (obviously), but completely tunes them out. I suppose this is getting a bit off topic though...
I posted up a little earlier about an article on Cracked.com about gaming addiction that they discussed with an English psychologist who specialises in gaming addiction. One of the first points they made was that some people play MMO games to get a reaction (no matter if good or bad) from other people. The stronger the reaction, the better. But that's the primary reason they are playing. It's not the game, it's the fact that they can garner a reaction from somebody; anybody.
Here's my post with a link to the article:
https://forums.frontier.co.uk/showthread.php?t=116120