Olly Murs: I feel sorry for Caroline Flack, she doesn't deserve to be called a cougar
Caroline, 32, received death threats during her 3-month hook-up with Harry, 18.
'I feel sorry for her. She's had a rough time after what happened with her and Harry,' Olly, 27, tells the Daily Star Sunday.
'She was getting called a cougar. She deserves better than that.'
Caroline and Olly first struck up a friendship during their time on the talent show spin-off in 2011.
The pair are set to present the programme again this year - but Olly will miss the audition stages because he's joining the 1D boys on their US tour.
excelled in loveliness today! Super delighted that I'm back working on
Xtra Factor this year with Olly..will miss him in auditions,' Tweets Caroline.