what a increadible useless chapter... there is not a single thing that justifies this chapters existence. There is no logic in any of the arguments that should've convinced even one of them to even remotely go along with this increadible weird play.
I mean as far as I know bdsm is something people only do with the person they trust as bdsm fetishes are something that can potentially ruin someones life if they get out. So like what the actual fuck... the last chapters where progress this one is evolution... backwards.