It was bound to happen, they isolate themselves too much. And their late night chats, whilst keeping the all night viewer happy, mean they cant get up the next day and take part fully in the house and tasks.
I think they would have liked a house divide like last year, but three of them does not a group make. They shoved Sam to one side once Max became obsessed with Saskia and they feel they are above the other housemates and make that perfectly clear when others try to join them. I am not saying they never talk to anyone else, but the living room is their territory and they do sometimes show their contempt for other housemates. Even if they wanted just their own little group it is a bad idea to not have any contacts or friendships with the other housemates.
Especially bad for them now that Saskia has started to feel uncomfortable around Max, as she told Anthony last night. Anthony would probably be allowed into Makosi's little gang, but Max and Saskia dont really have anywhere else to go except each other. The whole pretend romance was a bad idea, in my opinion. Once it fizzles, as it has started to already, what else do either of them have to offer?