Una Healy tells Sian Osborne ‘you can have him’ after sharing David Haye as their boyfriend

Una Healy has told Sian Osborne 'you can have him' after sharing David Haye as a boyfriend.

The Saturdays singer, 41, finally shared details about what was really going on during her rumoured 'throuple' involving the former professional boxer, 42, and model, 30.

Addressing the relationship setup for the first time, Healy spoke to Vogue Williams and Joanne McNally on the My Therapist Ghosted Me podcast where Una revealed she had dating David only.

The mum-of-two declared: “Dating HIM is the right term because that’s how it was - it wasn’t a throuple. We had a lovely relationship.”

She decided against pursuing any serious romantic endeavours with David after he told her that he 'didn't believe the traditional relationship exists anymore’.

Still, the pair got along and began to see each other on casual dates whenever Una was in London.

“It was casual, it wasn't serious,' she explained. "I was happy enough with it. It was in a romantic capacity.

“He was very honest that I wasn't the only woman he was seeing, I was very aware he was seeing other people. I knew he was being honest and it's not like I was being cheated on."

Una said she found David's honesty quite attractive.

“I knew he wasn't husband material, just a bit of fun and I was enjoying it.”

It soon became clear to Una that Sian and David were very close and he admitted that the model was ‘very involved’ in his life and suggested both women should meet each other.

“'He doesn't label, he's never called her [Sian] his girlfriend, he's open, polyamorous. So I did meet her and she was a really nice girl but there was nothing going on there so it wasn't a throuple. I wasn't romantic with her, I don't really know her.”

Then in January, the trio raised eyebrows when David shared a snap with his arms around both women while on a trip to Morocco. Una explained she didn’t want to be in Ireland over the Christmas break because it was her ex-husband Ben’s turn to look after their children: Tadhg, seven, and Aoife Bell, 10.

“The honesty was there and I found that attractive. I remember on the flight over he was in the middle seat and he had one hand on her leg and one hand on mine,” Una explained.

“I said to him, "what am I doing?" and he goes, ‘You're having a midlife crisis but don't worry so am I!' and I thought 'she's [Sian's] not because she's 10 years younger!’.”

Una noticed the trio were being referred to as a ‘throuple’ after the pictures from their trip made headlines. She had to Google the term because she didn’t know what it meant.

The trio went on another holiday together, this time to Costa Rico. But things changed when she heard the song ‘The Boy Is Mine’ by Brandy and Monica, an R&B classic about two women fighting over a man.

“As soon as I got there, I could hear the song. It just wasn't right,” Una recalled.

“There's no dynamic there - she's not my girlfriend - he's both our boyfriend and I just thought, "I'm out, you can have him."

“He can have whoever he wants because one [woman] will never be enough for him.”

Una - who is now single - and David stopped dating in January and it came as a surprise when he gave her a shoutout on Instagram for Valentine's Day.