Demi Lovato And Simon Cowell In X Factor USA Tiff
SPOILER ALERT: Tempers fray on screen as judges' bickering gets personal...
SPOILER ALERT: This story covers an episode of the show which has not yet been broadcast in the UK.
The bickering began after Demi praised country singer Tate Stevens for dedicating all his songs to his wife.
According to EntertainmentWise, she said: "One day when I get married I want my husband to love me as much as you love your wife, she is a very lucky girl."
At which point SiCo interjected: "Demi I think that might be a bit of a tall order actually."
And Demi retorted: "At least I am going to be married one day, at least I'll get married one day."
To which Simon replied: "I might get married one day. What? You don't think I will?"
And their sniping intensified as Demi gave her feedback to Simon's boy band Emblem 3.
She told them: "I just don't understand what Simon is doing with you guys. Every week I know you are going to be standing next to each other singing a song.
"But people are going to like you because you are good looking. I don't think this is genuine at all."
At which SiCo escalated things by telling her: "Demi you criticising me for doing a bad job is quite ironic."
She answered: "I am a 20-year-old girl and those boys lost their spark."
And Simon countered: "Yeah and you know what I have sold over 300m records sweetheart."
Two acts were sent home from the contest last week. The next act will get the boot this evening.