Tav doesn't know AA will do anything else than kiss them when they ask "Could I kiss you".
So the kisses you're asking for will make any sense literally just once? You're claiming that your Tav is scared already in the transformation scene and dialog before that, but your Tav still needs the kiss option? The logic is brilliant.
Having asked for a kiss doesn't mean they shouldn't be allowed to react with surprise or confusion when he suddenly makes them kneel or grabs their neck.
So your Tav is surprised to be brought to his knees when that's already what was done to him and Tav agreed? Voluntarily, not because he was threatened. Yes, I understand why AA grabs Tav by the neck, because that's exactly what Tav was asking for, and it's something they both enjoyed. I suggest you check the script.
Even in the romance scene, Tav can object at first and doesn't look ecstatic.
If you mean the “no”/“yes” dialog, I was just checking those dialog lines yesterday after the patch, Tav doesn't change his face at all. Even though you tried to convince me otherwise.