In one room, Casey enjoyed a soak in the bathtub with Lee and some of the other male housemates.
Quizzed on his relationship with Casey after just three days, a blushing Lee said: "Nothing's going on between me and Casey."
He explained to the group as they enjoyed a bath together: "I like her and think she's great.
"I'm going to talk to her and have fun with her, she's a great laugh and see's good fun. We were having a cuddle."
He added: "She's a really lovely girl, I like her. She's fun."
Meanwhile in the bedroom, some of the group were suggesting the blossoming relationship was little more than a showmance.
Apprentice star Luisa Zissman discussed the idea of faux romances with American star Jasmine, leading to the model to claim of Casey: "She's going to make sure she's not going to get voted out."
But Linda Nolan stood up for Casey, telling the girls: "Why are you two being so bitchy?
"I was just explaining to Jasmine about showmances," Luisa replied, "I don't think it's bitchy."
"Shame on you," Linda told her, "You just come across as a bitch, because that's what you're being."
What do you think, romance or showmance? Add your comments below!
Celebrity Big Brother airs nightly on Channel 5.