There is an option like that for the PC, when SH first confesses, but I've never used it. It would be weird of the game defaulted to that being the case if the option isn't chosen.
In this playthrough I am playing a duel wielding Cleric of Shar PC. Believe it or not, it is a pretty decent build. Just focus on mostly strength with some dex in there, and duel wield works out great for playing. No special melee attacks but really works, hell it is still more efficient than playing a Ranger. Anyways, there is a lot of really cool discussion choices with SH.