I think they were pretending as they suspected a family member to be a betrayer and they knew that person would spy on them any time in the house....so they pretended.....and I am also thinking that VR and Riddhima like to tease each other with morbid humour and fights 😆
This theory has been doing the rounds in this forum for quite sometime.
But if it is true...then all their solo fights behind close doors will make no sense at all. In fact, the whole Riansh build up will get ruined.