In between having hand stand competitions, the couple locked lips in the tub in a rare romantic moment since Nicole entered the house a few weeks ago.
Rex appeared pleased by his girlfriend's unusually flirty behaviour.
The housemate whispered in her ear: "You'll be known as Nasty Nicole."
Steamy: Rex and Nicole put bickering on hold to share a bath late last night
Earlier in the day, tensions were high as Nicole, along with Lisa and Sara, are up for eviction.
And another cider row rocked the house when Mo and Nicole argued after Mohamed mistakenly believed that it was his turn to drink.
The group had decided that the nominees would drink on Thursday night, because it is the last night for one of them.
But Mohamed thought he was entitled to some cider and took his share from the shopping budget.
Mohamed admitted he had taken it, but his fellow housemates questioned his decision.
"Because they're mine!" Nicole shouted. "I'm going tomorrow. Why the hell should you get them?
The cider row continued tonight as Rex and Nicole turned on Mohamed accusing him of being greedy
"You're so selfish it's unbelievable."
Nicole stormed into the bedroom to seek solace from Rex.
Mohamed told her he wasn't going to give the cider up, causing the whingeing teen to burst into tears.
He then had a change of heart and handed her the ciders, telling her: "I'm sorry for any inconvenience."
But Nicole was still angry.
She told Rex: "He is the nastiest person. He's actually disgusting. I can't wait to go."
Nicole, Rex and Mohamed rowed over cider last week. Mohamed took a can he thought belonged to Darnell, but was actually Rex's.
And that row was brought up again on Thursday night as Rex and Nicole accused Mo of overeating and drinking other people's alcohol.
Rex told his former pal, "It's common sense, that's just you being greedy", while Nicole added: "How do you think you got your name, Greedy Mo?"
Mo retaliated: "You're telling me I'm greedy, you're the person who opens all the envelopes."
Rex screamed: "You take cider and you overeat!"
Mo retaliated: "If there's spare food, I will eat it."
Meanwhile, reject Mario is making a surprise return to the house - to propose to girlfriend Lisa.
The former housemate is reported to have purchased a ring and is planning on sneaking in to the house to pop the question on Sunday.
Sources told The Sun: “Mario is really excited about getting to propose to Lisa.
“He has bought a ring and can’t wait to see her again.”
But housemates will have to wait until the weekend to see Lisa’s answer.
