That could work, the other thing i see is the potential of what a few other games do which is an early end, so you can persue a proper relationship and if you choose that option you get like a cutscene and a bit of story (probably a few sex scenes) and then the game ends and you get an option to go back to the previous choice or end the game which takes you to the main menu. Which is in practice what you said just implementable currently.