BB fans have recently seen Marco strike up a romance with his housemate Laura Carter on the show. The pair have been seen passionately kissing on several occasions, with Marco claiming he is in an "open relationship" despite being engaged.
Before entering the Big Brother house, Marco had said Kim has given him a "hall pass" while he is on the show. Now, she has taken to Twitter to address his actions with Laura on the show and claims she could be entering the house to confront him.
In a series of tweets, Kim denied she would be going into the house. While she did admit to saying Marco has been given a "hall pass" while he is on Big Brother, she insisted the pair are not in an open relationship, like he has made out.
She tweeted: "FYI I said #hallpass NOT open relationship. I don't watch bb, but I heard this today. Worst thing I can't even talk to him #bbuk #bbmarco.
"I find the newspapers so funny. What was written today is a real hoot. It's not true about me and #bbuk just imagine. That would be hilarious.
"Yes guys, I'm Marco's fiancé. I just wanted to put a few facts straight, that's all... #bbuk #bbmarco. That's all I'm saying guys. Sorry. No questions."
Kim's tweets came before viewers watched Marco and Laura appear to have sex on the show.
Scenes aired in last night's episode of Big Brother showed the pair getting intimate in bed together under the duvet. At the time, viewers on Twitter had criticised the pair's actions. Kim, meanwhile, had tweeted: "What has happened? #bbuk #bbmarco I'm out and have no idea... I'm at a fashion event..."
According to reports, Kim and Marco had got engaged just weeks before he made his debut on the Channel 5 reality show.
Reveal has contacted a rep for Big Brother.
Elsewhere in Big Brother, Marco and his fellow housemate Chelsea Singh had broke out of the house following Friday night's eviction twist. Alex Cannon and Jackson Blyton had been evicted by The Others, later joining them in Big Brother's second house.
The Others' Ryan Ruckledge and Andrew Tate were voted by the public to embark on a secret mission in the main house. They have been told to create paranoia in the house and must persuade the housemates to nominate a person of their choosing. If they succeed, they gain full housemate status.
They joined the housemates in the main compound and tensions began to rise when Ryan came face-to-face with his ex-friend Sam Giffen. Things then became heated when Andrew called out the housemates for being "snakes", after revealing he had been watching them.
As things boiled over, twins Emma and Victoria Jensen broke out of the house, with Victoria later deciding to quit the show. Emma returned to the house the following morning, and will now continue as a housemate.
Marco and Chelsea had also broke out of the house, but later returned at 4am.
Big Brother airs nightly on Channel 5.
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