The strip club owner will supposedly have her feelings for housemate Jamie O'Hara put to the test as she is confronted by her rumoured boyfriend CJ Meeks as part of an upcoming task that will see the celebrities come face-to-face with people from their past.
But it isn't only Bianca's budding romance that will have a spanner thrown in the works, as Calum will reportedly be visited by his model ex, Lindsey Pelas.
A source told The Sun: "The task will definitely shock the housemates involved. It's been a dramatic few weeks and bosses are hoping this will spark even more trouble in the house.
Bianca Gascoigne and Calum Best will reportedly be visited by their exes in Celebrity Big Brother
The task will definitely shock the housemates involved.
Celebrity Big Brother source
"Bianca will be squirming to see her boyfriend join her in there.
The cruel twist follows accusations that Bianca "told Big Brother producers that she was single in order to guarantee her place in the house", despite being in a relationship with the cage fighter
Meanwhile, Calum is said to have split from Lindsey shortly before entering the famous compound after months of dating.
A photo posted by Cj Meeks (@official_meeks) on May 25, 2016 at 4:12am PDT
Bianca has since struck up a romance with housemate Jamie O'Hara
Celebrity Big Brother 2017 highlights
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Celebrity Big Brother 2017: The best bits from the latest series including all the arguments, kisses and Tony the Pony.
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A photo posted by Calum Best (@mrcalumbest) on Dec 6, 2016 at 6:31am PST
Tonight's episode will see Bianca and Jamie's romance heat up once again as the duo start planning their future together after the show.
Dreaming about spending time alone together, Bianca will suggest the two should enjoy a romantic getaway once the reality series is over.
And her proposal goes down very well with a seemingly smitten Jamie, who even offers to foot the bill for their trip.