David Haye appears to confirm 'throuple' relationship with Una ...

Speculation surrounding their relationship first began when the trio shared a slew of cosy holiday photos of them together in Costa Rica last month.

Fuelling the rumours, the British boxer, 42, shared a sun-soaked snap of himself posing with Healy, 41, and Osbourne, 31, on the beach during their recent breakaway.

Captioning the post, he raised eyebrows with the caption: “Happy Valentine’s Day to the beautiful Queens in my life, making my world a better place to live in!”

He later shared a selfie with The Saturdays singer and another with Osbourne, wishing each of them a happy Valentine’s Day separately.

Elsewhere, Healy hinted at the three-way relationship on her Instagram when she posted a photo of handmade Valentine’s Day cards from her children as well as a card that teased her “throuple” status.

The card featured a cartoon of a glass of orange juice with two slices of orange and the caption: “I’d be nothing without you!”

In January, Hayes addressed the “throuple” claims when he attended Chris Eubank Jr and Liam Smith’s fight at the Manchester AO Arena.

He said at the time: “I like to keep my private life private. I let people in through my social media a little bit, but what I do behind closed doors is between me and the girls involved.”

The sports star continued to Pro Boxing Fans: “So yeah, I don’t really want to go into all that.”

The Standard has contacted David Haye, Sian Osbourne and Una Healy’s reps for comment.