Despite being engaged to fashion designer Kim Melville-Smith, Marco got down and dirty with Laura on the weekend and has now made a pass at fellow housemate Emma Jensen, who originally entered BB with her twin sister Victoria.
While chatting in the bedroom, 21-year-old Marco even talks about how he is yet to find "the right person". Err...you're ENGAGED?!
In scenes that will be aired tonight (14 June), Marco says: "Until I find the right person, I just want to be free, I just want to be a bird."
He then asks: "Got any cool friends that I would be perfect for?" Emma replies: "Most of my friends are, like, 30."
Marco says: "That doesn't bother me if they're cool." He then tells Emma she is "super cute".
Yesterday, we told how TV watchdog Ofcom received more than 250 complaints about Marco and Laura's on-screen romp. Viewers were left questioning whether they'd had sex and fans took to Twitter to brand the scenes "disgusting". A BB spokesperson declined to comment.
Although she has now deleted it, Kim later denied on Twitter that she and Marco were in an open relationship and quashed claims she had given him a 'hall pass' before he entered the house.
Kim has told her followers that she is not watching this year's BB, despite her fiancé being on the Channel 5 show, but she will no doubt get wind of his latest antics soon enough. We wonder what she will make of it all...
Big Brother continues tonight, 9pm, Channel 5