From a gameplay perspective I do not think it is a good idea to have two lose conditions, HP reaching zero and orgasm reaching 80 (it says 100, but ingame it triggers at 80), as in effect it forces you to either only use attacks or sex moves, never a combination.
Instead of orgasm could make you lose a lot of HP, and properly also decreased energy regeneration. Maybe also a few rounds of stun.
Also, as there is currently no multiplayer yet, you can simply loop each stage of the animation until you press a button or click with the mouse. That way you basically have your gallery.
In multiplayer the scene could advance if one of the players hits continue.