The 18-year-old heartthrob has already been linked with singing partner Jo, 26, because of their obvious chemistry. But the Bradford-born blond claims he's not dating Jo and it's actually Hannah he has his eye on.
He said: "I was a big fan of S Club. I grew up with them, they were legends to me. But I didn't fancy Jo or even Rachel Stevens.
"To be honest I fancied Hannah. I told Jo and she's going to try and arrange a meeting. But Hannah is still going out with Paul Cattermole who was also in the band so I don't know what is going to happen.
"Jo and I are both single. We're not dating. It's complete nonsense.We get on well and have a laugh and have been out one night for a bit of a drink."
Chris and Jo were one of eight partnerships between celebs and professional singers in the new BBC One show hosted by husband and wife duo Vernon Kay and Tess Daly.
It kicked off on Thursday and over eight nights - Thursday to Sunday for the next fortnight - the couples will duet in a variety of styles, including country and western, swing, rock ballad, pop and soul.
The judges - Lulu, Radio 1's Trevor Nelson, former drummer of The Police Stewart Copeland and vocal coach CeCe Sammy - then mark their performances before the public vote.
On the opening show Chris and Jo looked like pop stars but their nerves got the better of them while singing Extreme's hit More Than Words with the backing of only two acoustic guitars.
Chris said: "We were both nervous during the show. While the other acts had the live backing band we only had guitars, so every note could be heard.
"It's been difficult because I've been working in Liverpool on Hollyoaks so Jo, who lives in London, and I haven't had as much rehearsal time as the others."