Surely the other housemates are sooner or later going to turn against John James and Josie.
They are being affected by their relationship. Some housemates have talked about feeling uncomfortable, while some of them seem inhibited by their constant under-the-duvet stuff.

So much time spent together under the duvet inevitably means that they are not fully mingling and integrating with the rest of the house.
I don't know for certain of course, but I thought at one point last night Joe-James (JJ2) looked distinctly unimpressed by JJ/J.
Surely they are going to attract more nominations soon.