There is quite a few threads on TIBB discussing those who turn on Ben, like Mario, Steve and Dave.
Could it be that Ben is the one that's causing this friction?
Every time I see Ben talking to one of the housemates, he seems to be moaning and bitching about them behind their back. However he always has to get it in that he loves them no matter what.
If he was going on & on in my ears every day about other housemates I would likely turn on him too.
Not that I am saying all this is Ben's fault, it's just how I see it