The reality TV star was the first to leave CBB on Friday night (16 January) after being voted out by the public, and told Reveal that due to Perez Hilton's presence "there will never be fun and games in the house".
Model Chloe - who was once the bottom double for actress Cameron Diaz - didn't mince her words when she told us: "Perez is a nightmare to live with. He doesn't stop talking from morning, noon to night."
Clearly relieved to be away from her former housemate, she added: "He's a deeply unhappy person, who is beyond help. He's already cracking."
Chloe, star of MTV's Ex On The Beach, continued: "While Perez is in the house, there'll be no fun and games. He's a clever lad and knows what he's doing. He's his own worst enemy."
She also says that Perez is the only housemate playing a game.
Chloe reveals: "Perez has nothing to lose, which makes him a nasty person. He is bullying people by harassing them including me, Alexander, Katie [Hopkins], Michelle and Cami.
"He doesn't like anyone in the house except for Nadia because she laughs at everything he says. She's lovely, but she's shot herself in the foot by siding with him."
In fact, the house sounds so toxic that Chloe admits NO ONE wants to stay in the house!
She says: "Everybody wants to leave, it's been too much too soon. It's not a happy environment, it's draining and intense.
"So many people are hanging by a thread - anyone could crack. When I left, Alexander said he's not sure he's even going to last until Tuesday.
"It's only made for the toughest people to be able to handle. It's the most intense and drastic CBB so far."
Chloe declined to comment on the incident with Jeremy Jackson which led to his removal from the house, but she did say: "I've dealt with it. I'm not going to let one bad experience make me a shy timid girl - otherwise they've won."
She also revealed she was unsure how Katie Price entering the house would affect the dynamics, but predicted that the two Katie's might actually get along!
Chloe, who backs Cami or Michelle to win, said: "I think the two Katie's will get on, if they give each other a clean slate, otherwise there will be rivalry."
She also admitted: "Katie Hopkins is the nicest woman on the planet."
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See the original CBB line-up enter the house:
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