I can't see that it matters that much, as it is a game after all, and just because they were thrown into the safe house together, doesn't mean they have to automatically become best buddies. How housemates of any series nominate is all gameplay and up to them. The way they nominate never bothers me, it would take way more than that for me to be put off a housemate. Faye was constantly nominating Aaron after all, and look at both of them now