There are no rules for that, because if you're in a relationship practicing BDSM, you can set your own lines. There are no universal rules every pair is forced to follow.
I know what you mean, but there is no rule forcing couples to comply. It's not good manners from the Top tho
Tbf their relationship feels more like 24/7 dynamic than strictly in the bedroom, and in those situations real life things inevitably bleed into the bedroom. I think their top should’ve explained the different ways BDSM can be done rather than throwing the bottom into the wringer and doing whatever he wants with him though. Informed consent is important
Okay not an expert in ds relationship but I’m like 90 percent sure one of the rules of ds is role play is strictly ROLE PLAY and you can’t bring in real aspects like bringing up recent interactions that’s like having sex and your partner suddenly being like damn that friend of your was being clingy. I’m guessing like many authors author looked up baseline information and didn’t do a deep dive on it since it’s a embarrassing topic to sum but again I feel like by trying to normalize bdsm we stray from its core components.