Seems to be a new couple who moved in without @VoyeurVillaNews saying a thing about them. Maybe they are a surprise. Will Lisa and Nick come back or are they finally out?
Unfortunately you are right at the moment. But VH won't tell them which friends and guests to have over. And it's in general a good thing. Imagine the impact on participants when they are no longer allowed to bring over and see their friends. I don't want to watch that. Unfortunately here the friends are boring and strange and do nothing interesting.
But its the thing of G&M. They will notice when nobody watches them anymore.