The HM's would know him well enough, given that they spent 24 hours a day with him. With the exception of Ari, they all seem on great terms with him. It seems nice guys really do existSo fake Marley won. I could tell by the inflections in his voice he put on a fake persona the whole time and suppressed his real personality. In real life he's probably a wild party animal. It's just a pity so many fell for it, including the other housemates.