The 30-year-old, whose X-rated romp with the tattooed model drew more than 250 complaints to TV watchdog Ofcom, went topless as she moved in for a passionate kiss with female housemate Evelyn Ellis in a hot tub in last night's show.
After declaring that she's 'only friends' with Marco after the saucy encounter over the weekend, she now appears to have switched her attentions to the 20-year-old Australian.
The pair whipped off their bikini tops and kissed in the Channel 5 show's hot tub before dancing topless around the house.
Laura's latest raunchy behaviour comes just days after her and Marco outraged viewers with their shockingly sexual antics in the house.
The son of celebrity chef Marco Pierre White and Laura, a former star of Emmerdale and Casualty, sparked complaints after a booze-fuelled sex session.
White has a fiancee - but claims he was given permission to cheat on the reality show.
Laura, who lives in Sheffield and has reportedly enjoyed liaisons with singers Craig David, Justin Bieber and model Calum Best, announced before entering the reality TV series that she could get any man she wanted and was prepared to have sex on screen.
The West Yorkshire-born beauty has also appeared in reality TV series Young, Free and Single, The Royal Today, award-winning Channel 4 drama Red Riding and BBC drama The Syndicate.