In tonight's show, Geordie Shore's Marnie is seen telling her fellow housemates that she is expecting a child with the TOWIE star.
But before you think she's totally lost the plot, it's all in aid of a task!
The housemates are asked to take part in Big Brother's Show-Off Task, which will involve them showing off their talents to their fellow contestants.
Marnie, Lewis and Ex On The Beach's Stephen Bear act out a scripted reality TV scene - and it is during the skit that Marnie pretends to be pregnant!
The trio finish their performance with both Lewis and Bear proposing to Marnie...
Meanwhile, Marnie will also been shown branding Bear "ruthless" tonight .
Marnie and Lewis have locked lips several times already, and Bear tells Renee Graziano that he doesn't feel the relationship is genuine. He also tells Lewis: "I could kiss her if I wanted to! I can do what I want!"
After getting wind of what he said, Marnie warns her housemates: "None of you know what he's capable of, he's ruthless!"
CBB continues at 9pm on Channel 5.