Jesy Nelson and her fiance Zion Foster have reportedly split up

A source told The Sun: "She and Zion remain friends and are fully focused on their daughters.

"They are fully united in co-parenting. Their priority continues to be the well-being of their daughters."

At the time of publication, neither Jesy, 34, nor Zion, 27, has confirmed that they have split.

In September 2025, Jesy and Zion - who started dating in January 2022, and had broken up and reunited multiple times since - got engaged on a beach at sunset.

They wrote in a joint Instagram post: "Just got engaged to my best friend."

Their engagement came four months after the duo welcomed Ocean and Story prematurely into the world.

This month, Jesy admitted she is "struggling" to come to terms with the needs and challenges Ocean and Story face after being diagnosed with SMA1 (Spinal Muscular Atrophy Type 1) - the most severe form of the rare, progressive, non-reversible, muscle-weakening genetic condition.

The emotional star - whose pregnancy was classed as high risk because her girls, who shared one placenta, were diagnosed with twin-to-twin transfusion syndrome (TTTS), a rare condition where blood flow between the tots becomes uneven - said on the UK TV show This Morning: "My house looks like a hospital.

"My hallway is filled with medical stuff. It's crazy how you can go from one extreme to the next.

"Story is on a breathing machine at night because she's not strong enough to breathe by herself, they have feeding tubes down their nose, and I've literally had to learn all this in the space of a few days since getting their diagnosis. It's so much to deal with.

"I'm still struggling with it, I'm not going to lie... I just want to be their mum, I don't want to be a nurse. It's hard. I just want to reiterate that if this is caught from birth, it's just life-changing.

"I don't think I'll ever get over it or accept it, but all I can do is try and do my best and try and make a change."

The babies - who are under the care of Great Ormond Street Hospital in London - have undergone gene therapy, which "essentially puts the gene back in their body that they don't have" and "stops any of the muscles that are still working from dying".

But amid "constant physio", Jesy and Zion have been told that Ocean and Story "will probably never walk, probably never regain their neck strength, they are going to be in wheelchairs", but Jesy is trying to stay positive.

The Brit Award winner added: "Listen, there have been so many stories where parents have been told this, and their children have gone on to do incredible things, so I believe you've just got to manifest this.

"They are still smiling, they are still happy, and they have each other, and that's the thing I'm so grateful for. They are going through this together, and I think this is beautiful.

"All I can do is try my best to be there for them, give them positive energy, and keep doing physio ... my whole life has completely changed."

Jesy is determined to campaign for SMA to be included in the list of conditions tested for in the heel prick screening after birth.

This is because the twins' outcome could have been different if it had been found earlier.

Jesy - who will share her high-risk pregnancy in a six-part Prime Video documentary called Jesy Nelson: Life After Little Mix, from February 13 -said: "For me, if this was the cards that I was always going to get dealt and there was nothing I could do about it, then it's almost easier to accept.

"But when you know that there is something that can be done about it, and it is life-changing to your child, that's the part, I cannot accept. And that is why I'm going to shout to the rooftops about this.

"It's alarming when you've got healthcare visitors coming around telling you they are fine and healthy and doing really well, and it took for my mum to say, 'They don't move their legs how they should be moving.'

"My mum is a worrier, and at the time, I thought that was just mum being mum, but then I thought, 'Actually, they don't move them a lot.'

"Every day, I started to notice movements less and less and less ... and when I watch back videos of them now from when I came home from NICU to now, they are moving their legs, and then week two, week three, it gets less and less and after a month, it just stops.

"And that's how quick it is, and that is why it's so important and vital to get treatment from birth."