For better or for worse however, their bitter feud was mentioned during a 9Now interview this week where Guy, 38, admitted they Kelly is “sort of, dead to me”.
And their bitter feud was evident during an interview with 9Now this week.
The singer went on to say with a laugh: “Because she follows everyone else on Instagram and she doesn't follow me, whatever.”
However, the other coaches Delta Goodrem and Boy George had nothing but praise for their fellow judges.
35-year-old Australian pop star Delta, revealed how she met Guy when he was on Australian Idol back in 2003.
“He had my poster on his keyboard!' she said.
“I was like, ‘Oh my gosh, Guy's singing to my poster!’”
Boy George, shared the moment he first met Kelly.
“I actually went up to Destiny's Child in a restaurant and I said, ‘I love your music, I'm a massive fan!’”
Kelly made headlines last week when she stormed off stage after she admitted she felt Guy had made an “unfair” song choice for Bukhu Ganburged and Johnny Manuel's duet.
Guy had allowed bookies' favourite Johnny to take the lead in the performance while Mongolian throat singer Bukhu only just had a supporting role.
In an earlier episode, Kelly went head to head with Guy after he turned his chair for a singer in the blinds even though he already had a team that was full.
This article originally appeared on Over60.