According to E3 video there's a relationship mechanic in the game and indeed the two main characters are quite different in disposition, so this relationship is likely influenced depending on the decisions you make in the game. So they either grow closer or further apart (which influences the ending of the game, maybe).
I wonder whether that's the meaning behind that piece of artwork with the rift between two characters.
![[Linked Image]](http://www.rpgsite.net/images/screens/362/divinity.jpg)