'X Factor' hopefuls Cher Lloyd and Liam Payne have reportedly struck up a romance at the show's Boot Camp.

According to The Sun, a source said of the pair: "There was an obvious spark and everyone was talking about it."

"They just clicked. We thought they were pals as they were getting on like a house on fire."

"They soon disappeared though, and slipped into one of the rooms."

"They emerged later looking very red-faced and were obviously trying to hide something."