First run through the game, selected the AI personality "Knight" for Roderick while not giving a personality to Scarlett (the role of her personality being played by me.)

Every time we disagree on something I will try to be logical or charming, and every time he threatens my life. So now I'm in this weird abusive relationship with my pretend boyfriend who I cannot get rid of (I would be perfectly happy running off into the sunset with Wolgraff. At least he listens to me).

Aaaanyway, is there an AI personality I can pick where Roderick isn't a complete jerk to me 100% of the time, or is this some quirky flaw in the way that dialogue arguments are handled?