It all started Wednesday evening when Jasmine Waltz was evicted, leading Lee Ryan to accuse Casey of being a game player.
“She’s playing a game,” Lee said of the model. “Well, if she wants to play, let’s play. She’s playing it well but I ain’t made my move yet, I’ve been holding back but now I’m like, let’s play.”
All the accusations got too much for Casey, who broke down in tears yesterday over Lee's 'bullying' of her.
She weeped to her fellow housemates Ollie Locke and Luisa Zissman: "I don’t want anything to do with him.
“All I’ve done is try to be nice to him and all he’s does is try to hurt me. I don’t want to speak to him ever again.”
It's left the pair's fellow housemates taking sides, with Lee accusing Casey of telling him to "go along with" their romance for publicity, a comment which Casey denies ever making.
She said yesterday after being told of Lee's claims: "How much more can he hurt me? I don’t want anything to do him. I don’t know how anyone can try and ruin my experience in here."
"Someone's being petty, it's either him or or her," Dappy moaned. "That's fake. That is fake."
"They must have it on tape, whatever was said," Lionel chipped in.
"We don't know what to believe, we don't know what's the truth so there's no point of us speculating," Luisa said. "One of them is being dishonest about what they said."
She later added: "Does it really matter? Do we really care?"
Which side are you on - Team Lee or Team Casey? Or is it a case of being Team Luisa and finding the whole saga rather dull already?
Celebrity Big Brother continues tonight on Channel 5 with the latest live eviction.