Olly Murs has teased about a possible romance with his Xtra Factor co-host Caroline Flack.
The 27-year-old singer said he likes laughing and cuddling with the presenter so much on-screen that their flirting continues once the cameras switch off.
"We do some great flirting. We get on well and it's great to have that chemistry both on camera and off," he told The Sun.
"Sometimes relationships build over time and at the moment we're concentrating on the job in hand but we do have a good flirt. She's attractive and we have a laugh, so when the show finishes in December, who knows what will happen?"
But Olly - who finished as runner-up to Joe McElderry in the 2009 series - joked about keeping his options open, admitting he also has the hots for new X Factor judges Kelly Rowland and Tulisa Contoslavlos.
"They're both gorgeous women and something completely different. Kelly's got this really endearing side, a cheeky American accent and the longest legs I've ever seen, and Tulisa is feisty and gorgeous. They're both hot," he revealed.
He added: "I am one hundred per cent single. I like being single but I'm always on the lookout and I've always got one eye on the action to see what's around. I'm happy being single but that's subject to change if the lucky lady comes along."