The pair have allegedly been flirting it up a storm over the past few weeks, but according to sources Chloe and Stevi took their relationship to the next level when they both checked into a hotel near Wembley Arena.
An insider told The Sun: “Chloe and Stevi have been flirting for weeks on end. They are both larger-than-life characters and at first it seemed like it was all a bit of fun and they weren’t really that serious.
“Also, Chloe has a boyfriend, so we all assumed nothing would actually happen between them. But in the last couple of weeks things have ramped up a notch and they have been all over each other.”
They continued: “On Saturday, Chloe booked herself into the Hilton and Stevi told everyone he was going to see some mates. But he ducked out and went to meet her.
“They disappeared upstairs pretty sharpish and didn’t emerge until the next morning. Stevi looked like the cat that had got the cream and he was overheard bragging about what they got up to.”
According to reports, Stevi, 34, was chatting to mentor Simon Cowell about his conquest, but made the mistake of leaving his mic switched on whilst boasting about getting to ‘sixth base’ with the 23-year-old Chloe.
“Before going into more detail, he checked there weren’t any media in the room. But hilariously, he forgot his microphone was still on and he was being broadcast to the entire studios including everyone’s friends, families andproduction guests. There were also about four cameras rolling as he was still on stage.
“That’s when he told them — and everyone else listening in — that he had got to sixth base with her. No one’s quite sure what that means, because there are only five bases on a baseball pitch.
“But it’s safe to say they must have done pretty much everything under the sun if they got to sixth base.”
An X Factor spokesman said: “We don’t comment on contestants’ private lives.”