So... The top literally didn't give a fuck about consent or communication at the beginning of the story and suddenly characters behave like they don't remember that. And for some reason they both behave as if the Sunday sex can't be avoided and has to be performed no matter what but like... Nobody is making you do it. It was an agreement between two people (if you can even call it an agreement, because it was more like abuse first few chapters), you can just stop. Like I can understand that the bottom is like "his my boss I have to do it" but the top? He is unhappy sexing the guy so why is he still sexing?
Don't get me wrong. I don't have a problem with the story being fucked up or about abusive partners or about difficulties in discovering bdsm as part of your relationship but please be consistent. You can't have him be an abusive asshole and then show exemplary communication skills and being like "let me teach you about safe bdsm" because the story is just all over the place.
I see potential here, I like parts of it, but the story as a whole just doesn't make sense to me.