CBB's Calum, 33, has hinted at a relationship during his time on the reality show and has been seen brushing off advances from fellow housemate Cami Li.
Earlier today, it was claimed that Calum is "besotted" with 23-year-old Ianthe - who appeared on Made In Chelsea in 2012 - after meeting her through friends.
A source told The Sun: "Ianthe and Calum have been dating since last year but have kept it quiet. He seems quite besotted and the feeling is mutual."
During this series of CBB, Calum was shown cryptically talking to Cami Li about a special and mystery woman in his life.
While tipsy and flirting, Cami pretended to reference siblings as she told him: "I don't have a boyfriend, I have a sister - and you have a brother."
He replied: "Well, yes. There's someone who, when you come in here, you think about more. You think to yourself, 'Oooh'. I'm a single dude, but I'm allowed to have somebody who is on my mind."
Since then, Calum has been seen brushing Cami off after she climbed into his bed and began whispering to him. The star, who is the son of late footballer George Best, simply told her, "I don't know what you're talking about," before rolling over and going to sleep.
Following the snub Cami walked away, saying: "Ok, d***!"
Meanwhile, tonight there will be a live 'bombshell, which will see viewers send a CBB housemate home!