© PA Images
The Wanted star revealed that the group had already met the pair, and said he is "delighted" for One Direction star Styles.
George told Now: "We've met them a few times - they're nice. I'd like to see what they're like after having a beer.
"Harry Styles is doing alright with Caroline Flack, isn't he? I'm delighted for the boy. I think it's great for both of them."
Playing down their controversial age gap, he added: "She's like, 'So what if he's 15 years younger?' and he's like, 'Brilliant, she's 15 years older!'"
© Rex Features / Beretta/Sims
© PA Images
Rebecca Ferguson and Kerry Katona have both expressed their disapproval of the romance.
Xtra Factor presenter Flack has already faced an uproar from One Direction fans.
> Caroline Flack: 'Harry Styles relationship isn't disgusting'
