The competition for 32-year-old Bachelor Matt Agnew's heart is heating up following last week's rose ceremony bloodbath that saw eight hopefuls chopped in the first week.
And now Woman's Day's on-set spy reveals that behind the scenes, the show has descended into "utter chaos", amid some of the b*tchiest behaviour ever seen!
"The tension was so bad that the girls started refusing to sleep in the same room as each other," says the source.
"At one stage there was something of a bedroom protest," adds the insider, who reveals that jewellery designer Cassandra Mamone, 33, insisted she be moved from her shared room following a heated argument with the other Bachelorettes. According to the spy, Cass grew tired of repeated accusations that she was just on the show to get publicity for her jewellery brand.
Our insider reveals that Adelaide-based Cass did herself no favours by admitting to the other girls that she had called off a previous engagement "because her business has and will always be her priority". The confession did little to play down rumours the feisty brunette has a hidden agenda other than vying for Matt's affections...
WATCH: 8 Things You Didn't Know About Matt Agnew. Story continues after video...
Woman's Day understands it's Persian beauty Sogand Mohtat who the girls should keep an eye on!
"She's been cast as nothing more than trouble," warns our spy, who maintains she is set to be this year's biggest villain.
"She went around accusing a lot of the girls of being fake... it ruffled a lot of feathers."
Apparently, the 30-year-old got almost the entire mansion off side!
Meanwhile, Woman's Day hears that Sogand's antics are nothing compared to the drama bubbling away between fashion designer Monique Morley, 26, and cafe manager Nichole Wood, 25.
"Nichole is a lot more sensitive than she lets on," says the insider, who reveals that the usually bubbly blonde had a breakdown in the bathroom and was reduced to tears after an argument with a producer about her rival Monique.
"Nichole struggled with the constant comparisons to Monique and just felt like she didn't have a place in the mansion or with Matt," reveals the spy.
After being axed in the first week, Woman's Day can reveal that digital account manager Hannah Chapman, 25, caused producers quite the headache.
"She flat out refused to speak to the cameras, no interview, not a word," says the insider, who also reveals that the Victoria-based Bachelorette was so upset she even refused the prestigious limousine exit!
As the mass exodus of girls leaves emotions high, Woman's Day can reveal it's chemical engineer Chelsie McLeod, 28, who could be headed for an early exit!
While originally pinned as a frontrunner, our spy reveals Chelsie is "plagued about whether or not to leave the show" after having doubts over leaving her job in Victoria to take part on the series.
Meanwhile, it seems Matt could be in for a shock over brainiac Chelsie's past, with racy photos emerging of the hopeful posing in her underwear while swigging from a bottle of alcohol.