As Liam Payne’s unlikely romance with Cheryl Fernandez-Versini continues to heat up, his former One Direction bandmate Niall Horan is sharing his feelings on the glamorous pairing.

In a new interview with HELLO! magazine, the Irish heart-throb has teased that there’s a mysterious backstory to their relationship – although he stopped short of spilling the beans.

‘There’s a little bit of a story behind it but I won’t be telling you that,’ he told the publication. ‘She’s a great girl, really fun. He’s a top man and one of my best friends.’

And while former Girls Aloud beauty Cheryl, 32, endured the breakdown of her marriage to second husband Jean-Bernard Fernandez-Versini last year, Niall is thrilled to see her new joy with Liam, 22.

‘She seems happy, he’s happy, so I’m happy for them,’ he added of Cheryl, who served as a judge on The X Factor when One Direction competed for the top prize back in 2011.

In May, Cheryl was accompanied to France’s glittering Cannes Film Festival as she fulfilled her duties as an ambassador for L’OREAL.