Things have been tense between the hopeful and the X Factor judge, after Nick branded Anton's performance as "fake" during Saturday night's live show (21 November).
At the time, Anton hit back insisting he isn't putting on an act and has since fuelled their fallout by labelling Nick as someone "who plays music on the radio and has fake friends." Ouch.
On Saturday night (21 November), Nick had upset Anton with his critique, after the singer performed his rendition of 'One Sweet Day'.
Sharing his thoughts on Anton's vocal, Nick told him: "I don't know if you're the kind of artist who I want to listen to on the radio or buy the album. There's something that sill feels like an act to me, it doesn't feel real or raw enough."
Getting emotional, Anton interrupted Nick. He hit back: "All of this is real. This is not an act. There's nothing fake about me."
Nick then told the star not to "get aggressive", with Anton claiming he was just putting the judge straight. Now, he has hit out at Grimmy once again, slamming him for having no expertise to be a judge on The X Factor.
Speaking to Yahoo Celebrity about the exchange, Anton said: "That was actually very challenging for me, my first thought was 'how dare you?' I'm not going to allow anyone to do that."
"The other judges have experience with performing or at least nurturing and bringing us worldwide popstars," he continued. "They don't just play music on the radio and have famous friends."
Since Saturday's night show, Anton has continued to show his upset towards Nick. And when one Twitter used asked if Nick had tried to "sabotage" Anton on the show, he replied: "Yes it did seem that way But surely it can't be..."
This morning, Grimmers was thought to have addressed his heated row with Anton on his breakfast show for Radio 1, telling listeners he doesn't know why Anton is trying to "create fake beef" between them.
He insists he was calling Anton's performance fake not him as a person, stating: "When you queue up for the X Factor you're asking to be judged. I gave a comment which was constructive criticism and he didn't like it."
Responding to Nick's comments, Anton added in his interview with Yahoo that he thought Nick was "sad" to mention it.
"Having an opinion doesn't mean you have to hurt people," he said. "It doesn't mean that you have to assassinate people's characters. You don't have to be ugly."
Anton's exit from the competition yesterday came after Mason Noise was sent home during Saturday night's flash vote. Receiving the fewest public votes, he was immediately eliminated from the competition, with Mason later tweeting he was "relieved" to be out of The X Factor.
Louisa Johnson, Lauren Murray, 4th Impact, Reggie 'N Bollie and Che Chesterman are the show's final five.
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