Yeah, I never really like when you have to do every event of a certain type to be able to do other events of the same type, either with someone else or the same person you turned down before, for reasons. Like, I let the husband grope at the stovetop, then offered sex but he was too into the game, so said no to giving him a bj. Also told him to get his own beer but did kiss him. Then as chapter 2 started, it would not let me choose sex with him, even though I chose that option right before the end of ch1. So I edited the save file to allow it. I also went ahead and added like 3 points to every stat, just to avoid possible greyed out options.
Other than the stat restrictions, I really like what you have been doing with the game. I am in the process of writing something similar(except the husband won't be getting lucky, anytime soon). I chose not to use stats at all. Every sex act will be available, no matter the choices made before.