Then go jerk off to plenty of other games. The creator has stated that there's actually a story here and not just a porn game. Maybe if you followed along rather than just complaining things would make sense to you. Additionally I and many others appreciate the slow tease.
Exactly where is the build up? Since the 1st season 1st episode MC has wanted to do Charlotte and Charlotte wants to do MC. MC want to do Tris, Tris wants to do MC. They all have felt this even PRE-Game. There is no build up they are all just stuck ready to explode.
Hell Charlotte is even writing a romance novel of her wanting to start an affair with MC. Hell Charlotte has been thinking about this since MC was a younger boy.
I have no problem with slow burn. But since the 1st season they have all been at the point of exploding. There are just steps backwards and then right back to the point of exploding. Hell if you do read the story you start to realize they have all felt this before they even moved to this apartment. That is the problem we are all having. It isn't a slow burn but being stuck in one spot and the dev just dragging us along season by season.
If the dev had started off with Charlotte just behaving as Mom instead of all the flirting. Her being dressed around him instead of hardly and sexually dressed. Then slowly they began to flirt and she dressed more sexually as the game progressed. I would completely agreed with you. Then it would have been a slow burn starting at 0 and build up to 100. But the Dev started them all off pretty much at 99.5. Not much of a build up from 99.5 to 100.