Singer's very fond of the Irish teenager
The singer, 16, who came third in the final, told Diana he loved her on stage as she exited the show.
And the pair were snapped sharing a kiss backstage on Saturday night.
‘He says, “I love you, Di,” all the time,’ she says. ‘But not in that way.
‘There’s a difference between loving each other and being in love. I love him to bits.’
But Diana, 17, still holds a torch for on/off student boyfriend Chris Jones, 18.
‘I speak to Chris a lot, and although we’re not really strong at the moment, we have to see what will happen in the future.’