The Sun said that Katie Smith and the One Direction heartthrob dated for a few weeks while at the boot camp stage of 'The X Factor' in 2010.
While Katie failed to make the live finals of the ITV show, Harry was put together with Zayn Malik, Liam Payne, Niall Horan and Louis Tomlinson to form chart-toppers One Direction.
WATCH: Katie Smith perform a cover of Travie McCoy's 'Billionaire' with Harry Jones below:
Now the newspaper reports that Katie appears on the BBC One series with her new boyfriend, also called Harry.
The pair sing a duet to coaches Jessie J, Tom Jones, Danny O'Donoghue and Will.i.am.
A source said: "Katie can claim to have had Harry's eye before he was famous. He was smitten with her for ages and they used to flirt all the time on the show."
LISTEN: Katie Smith sings on the X Factor