Caroline Flack's boyfriend Lewis Burton playfully trolled her over their 13-year-old gap.
The model, 27, rung in his girlfriend's 40th birthday with her and her string of A-list pals at a flashy London restaurant on Friday.
But the dashing former professional tennis player couldn't resist making light of their 13-year age gap on her big night.
In a series of hilarious Instagram stories, the hunk paid tribute to his Love Island host girlfriend when the glittering night unfolded.
Lewis jokingly added 50 years to Caroline as he wished her happy 90th birthday.
The model then joked his stunning love didn't look a day over 70.
He wrote about snaps of the party: "Happy 90th baby."
Lewis added: "Not really you don't look a day over 70."
Fabulous fun was had at the London restaurant where Caroline celebrated turning 40.
It comes after Caroline and Lewis' romance has sky-rocketed in the past few months.
They were said to have started dating soon after Caroline touched down in the UK following her stint in Mallorca for Love Island.
Most recently, they have been topic of conversation after the Love Island star was spotted flashing a very sparkly diamond ring.
However, a representative for the star insisted she was "100% not engaged" yet she and Lewis were "very much together".
Caroline has a penchant for dating younger men; she previously grabbed the attention of headlines for her novels with Andrew Brady, Harry Styles and Prince Harry.
In March, Caroline publicly declared she would make her "badge of honor" in defiance.
She told The Daily Mail's You magazine: "My current status is not just that I'm a cougar, I'm Queen Cougar, which I guess is something I'm supposed to be ashamed of. But I'm just not.
"If 'cougar' is supposed to be some kind of insult, I'm taking control of that and turning it into a badge of honor. I'm Caroline Louise Flack and I'm Queen of the Cougars."