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Quite frankly Katerina, any of them with the exception of Sam as he promised he wouldn't, didn't he say he wouldn't as he wanted to give a him, the newbie a chance. Had he not said this, Sam would have been fair game too. It's just the two facedness of it that gets me. IMO he really showed himself up for the snake in the grass I had long suspected he was.
I think he was in a near-impossible situation.....he'd promised far too many people he wouldn't put them up, you just can't do that in this game, especially at this stage too.
He hasn't done himself any favours by trying to keep friendship bonds, because at the heart of Big Brother is the possibility that you will have to stab a 'friend' in the back.