I hate this scene... And, tastes apart, since we have the option to play either as DIK or as a chick, to be well designed, it would have to allow us the choice to fuck or not to fuck Sage. Moreover, if, due to some wussiness, you decide not to fuck her, whatever your current status and affinity were, they should be locked as a chick forever. In fact, for it to be perfectly designed, tits should grow on the MC if he decides not to fuck Sage, and, then, you'd have to play the rest of the game as a futa.