Great concept, rough around the edges.
As someone who plays the female PC I'd love some polish on that. Some images still show the male model and the sex scenes are still very focused on anal (which still works, of course, and should probably be kept for some scenes, but some variation between the paths would be great).
I especially like the "unseen" events, even when they're just variations of regular events. It lets you see the appropriate perspective according to how you play (cheated on/cuck/voyeur, oblivious/aware..). I prefer to keep the PC mostly in the dark and love the suggestive comments of what
might be going on with the girlfriend, finding clues, run-ins outside the exam room, etc., so I appreciate that I don't always have to "catch" the girlfriend or be told things explicitly in order to get the scenes.
After understanding the mechanics better I don't feel as strongly about the following anymore, but I think the order you can get scenes in can be a bit off. First time through I got several girlfriend-fucking-futa scenes before the kissing, groping, and suggestive-talking scenes which made some of those feel a bit underwhelming / like "back-fill" content. I know now that it was from her "need" building up after having Tina's coffee in the intro (a sneaky way of influencing the PC/girlfriend that I really think there could/should be more of, btw!) but I feel like it may be a good idea to move more slowly toward things like full on PiV even then, even if it's just a reduced chance vs HJ/BJ in the WeightedChoice list or slightly different "need" thresholds. I understand this needs to be balanced with the intended need to keep your girlfriend happy and their "need" in check though, so hey it's difficult.
Overall I really enjoyed this! It does need bug-fixing, but once that's done the core design is so solid it should really only need more scenes to expand on story and random scenarios.