You need to give them to the girls to unlock most of the sex scenes, obviously the ones with no condom option
This game is great and being in full 3D, full immersion and pov really enhances a lot the player experience. The free camera movement option during sex scenes is great, even though sometimes captures strange/imperfect close up images.
i really suggest the dev to try to workout the control through VR equipment. I guess it should be quite tricky for an optimal interface and view but still I think it is the future of both adult gaming and maybe adult content in general