BlueScaliesxx98, thank you very much for your well-thought post and your effort. Great points! I can only add a suggestion, maybe, if people think that it would be too obscure to hide such flags about the kisses in the dialogue about the brain, then maybe we can just have two options, while asking him for kisses:
1. "Kiss me and don't be gentle" - in this case Tav asks for rough kisses themselves, so that means they give their consent to get rough kisses - hence "Happy faces". 2. Just "Could I kiss you" or "kiss me" option - Tav doesn't agree explicitly to AA being rough with them, hence - "Scared faces".