As competition on the Blind Auditions heats up on this year's season of The Voice, so has tension behind the scenes!
An on-set spy tells Woman's Day Delta Goodrem's close friendship with executive producer Leigh Aramberri is causing problems in her relationship with rocker Matthew Copley.
Sources reveal the 2019 judging panel, which consists of Delta, 34, Boy George, 57, Guy Sebastian, 37, and Kelly Rowland, 38, has been cautioned by the show's bosses against bringing "large and often unruly" entourages to the set to avoid distraction during filming and spoilers getting out.
But Woman's Day's insider explains there have been whispers on set that the warning has made Matthew suspicious it might be aimed at him, as he's fully aware of how well and closely Leigh and Delta work together as a long-running team on The Voice.
"Matthew's naturally a bit intimidated by their close friendship," says the well-placed source. "He's always supportive of Delta and her career, but he's no fool – he knows she's a catch."
WATCH: The Voice coaches Guy Sebastian and Delta Goodrem share never-heard before details of their secret romance. Post continues below
"He's not the type of guy who would put up with another guy circling his woman," the source continues. According to the insider, Matthew has repeatedly confided in his friends about the warm relationship she shares with the good-looking producer.
The source reveals the co-workers are in fact so close, Delta often affectionately refers to him as her "hubby" during filming and he has been known to often call her his "wifey".
The insider adds, "Obviously Matthew would one day like to put a ring on it, so comments like that are hard to take."
In 2014, after a romance with former Voice host Darren McMullen, 37, Delta revealed on radio show Kyle & Jackie O she was single for the first time in 10 years. The same day, the Voice coach took to Instagram to share photos of her and Leigh locking lips while out in Sydney.
"Wives and hubbies, pash and smash," Leigh captioned a photo of him and Delta embracing in 2014, before uploading another snap which he simply captioned with a heart emoji.
Since then, the duo have been snapped out on countless lunch dates and nights out on top of spending a large portion of their time together to film The Voice.
Not only that, but since Guy Sebastian joined the panel, there's been ongoing talk about his brief romance with Delta back in the day, with the two stars seemingly talking about the fling every chance they can!
"Matthew knows it wasn't serious with Guy and that they were just kids when they dated, but that doesn't mean he wants to keep hearing about it day in and day out," the source says.