Definitely all an act as they hated each other, apparently. I feel Fern is too fragile for the house and I think she feels like she’s bitten off more than she can chew with all these big personalities.
I understand why Sharon kept Zeze - they are similar characters.
Sorry to Strictly fans but I find Nikita quite boring and vain. He looks like a young David Emanuel - Princess Diana’s wedding dress designer (niche, I know).