I don't know, man. If you have to publish guides on how to navigate your game, I think you need to re-think the interface. I'm not against slow burns. Some of my favorite erotic fan fictions are slow burns. But if that slow burn goes nowhere, that's a different thing. I think you should've given your fans something like an update where the story branches into multiple possible scenes where you can pick the girl you want, and have that as the end for this version of the game.
For example: The girls have a sleepover and someone smuggles some alcohol. They drink and sleep in the living room. MC checks on them, put blankets on them, and decides to shower before going to bed. In the shower, you can give MC a choice to think about any girl, and then when MC goes to his bedroom, he finds that girl there. Then you give them a scene. I think that would be a nice way to end this version of the game if you really want to go forward with the sandbox reboot.