Gale does say no, what are you doing, or something to that effect if you go for the Mindflayer kiss, but I don't believe the other companions have anything to say in that scene. There has been more interjections inserted into the scenes as early access continued, but not much really. A lot of permutations with regard to dialogue will need to be answered by canned replies that can cover multiple instances I imagine, since we're dealing with a game with full voice over.