One idea for the first boss, perhaps after awhile the girl that was having sex with him can get up and try to have sex with the boss again. I feel as if she was having a lot of fun and would want to continue. She could either attack you to get you out of the way, or by having sex it would help you a bit(it would act as a distraction). Or perhaps you could watch :O.
I love the different voice lines and poses you develop as the game goes on.
Your game is amazing and I will support you, keep it up!