Jesy Nelson and her fiancé, Zion Foster, are believed to have separated just weeks after publicly disclosing that their twin daughters were diagnosed with a severe neuromuscular condition.
The former Little Mix singer, 34, and the 26-year-old rapper became engaged in September 2025 following three years together, but their romantic relationship has now come to an end.
Despite the split, the pair are said to be committed to raising their eight-month-old daughters, Ocean Jade and Story Monroe, together.
A source claimed to The Sun: “She and Zion remain friends and are fully focused on their daughters.”
Jesy Nelson and Zion Foster with twins Ocean Jade and Story Monroe | INSTAGRAM
The insider added: “Their priority continues to be the well-being of their daughters. They are fully united in co-parenting.”
The twins were diagnosed with Spinal Muscular Atrophy Type 1, the most severe form of the genetic condition.
The couple’s relationship began in January 2022 after years of friendship, though they experienced a brief separation in 2024 before reconciling.
Mr Foster proposed during a romantic beach trip at sunset in September, with Ms Nelson sharing photographs of her sparkling diamond ring alongside the caption announcing she had become engaged to her best friend.
Jesy Nelson shared her twins’ health news earlier this month
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INSTAGRAMHowever, when the singer appeared on This Morning on January 7 to discuss her daughters’ devastating diagnosis, the engagement ring was noticeably absent from her finger.
During the television interview, Ms Nelson spoke extensively about her twins’ condition but made no mention of her relationship with Mr Foster.
The missing jewellery prompted speculation about the couple’s status, which has now been confirmed by sources close to the pair.
Ocean and Story were born prematurely in May following a turbulent pregnancy that was classified as high-risk after the babies were diagnosed with twin-to-twin transfusion syndrome, requiring in-utero surgery and months of close medical monitoring.
The twins are now under the care of Great Ormond Street Hospital, where they have received treatment, including an NHS-approved gene therapy infusion.
Ms Nelson explained during her This Morning appearance that the one-off treatment “essentially puts the gene back in their body that they don’t have and it stops any of the muscles that are still working from dying.”
She added: “But any that have gone, you can’t regain them back.”
Type 1 SMA symptoms typically appear in infancy and include extreme muscle weakness, breathing difficulties, and problems swallowing.
Mr Foster shared an emotional self-written poem on Instagram on Thursday, reflecting on coming to terms with his daughters’ condition whilst praising Ms Nelson as a mother.
In the verse, he described watching his daughters’ smiles “like sunsets, not promised, but real” and called them “two little warrior girls who already know how to fight.”
He also commended Ms Nelson for highlighting what he called “a huge flaw in our healthcare system,” writing: “Test kids at birth for SMA in the UK now that there are revolutionary treatments available.”
Ms Nelson has launched a petition calling for SMA to be included in the NHS newborn heel-prick blood spot screening test, which currently checks for nine rare conditions.
While newborn SMA screening is not yet available across the UK, Scotland has announced plans to introduce testing from spring.