The game feels a bit too barebones, and I don't mean (just) content wise. Basically, there are a lot of things you can, and maybe should be improved upon.
While I think the core of the story is fine, I feel like the parts leading up to the sex-scenes don't give them any weight, making them feel very flat. For example, the girl meets you, and within one day she's screaming your name while masturbating, a bit too "unrealistic," and it doesn't do wonders for her character.
Also regarding the scenes themselves, more specifically of the BJ scene. Instead of having two cut-out images, and using them to represent the motion, I would instead do one of these two things:
- Have a Stand-by-Image which is followed by a Contact-Version of it, and then I'd use the 2nd image for the motion with the 3rd Image (which in this case would be the dick.)
- Have multiple images that do the whole motion, have a "1 to 5 step" image that does the whole motion and quickly swamp between them to make the animation.
Of course, you don't have to adhere to anything I say. I feel like I need to say this every time I give feedback on a game. It's your game, you know what you want to do, I'm giving feedback based of what I'd do, but that may lead to something you don't want- so... see whether anything I said is useful, if so, try to implement it, if not, cheers. As long as you focus on your own vision, it should turn out alright, and good luck.