One of the most annoying things that my boyfriend and I have encountered is when one of us is dragged into a scene that the other should be receiving, or when one person walks up and triggers a scene that makes more sense for the other to get, examples being when one of us has Astarion but the other is getting his scenes without ever having him under their control.

My Suggestion is to make a simple conversation pass option, where you can swap the conversation from one player to another. It could perhaps even be a simple final option. This could allow for not only a fix to accidental scene triggers but also allow for more player engagement than just voting on an option, as now everyone could possibly partake in the conversation and be apart of it, rather than just simply standing dead eyed behind the person talking without ever doing anything.