Jesy Nelson and Zion Reportedly Split After Daughters’ Diagnosis

Jesy Nelson — the 34-year-old former Little Mix singer — and her fiancé Zion Foster have reportedly split up, just weeks after sharing that their twin daughters were diagnosed with a rare and severe genetic condition. The news follows a tumultuous period of pregnancy complications, premature birth, and difficult medical updates for the family.

Sources close to the pair say the split appears to be amicable and that they remain committed to raising their children together, with both parents focused on the health and well-being of their daughters.

Timeline: From Engagement to Separation

Nelson and Foster first became a couple in January 2022, and their relationship endured several years with ups and downs before Foster proposed in September 2025, shortly after the couple welcomed twin daughters Ocean Jade and Story Monroe. At the time, Nelson described Foster as her “best friend.”

However, in recent weeks, the engagement appeared to unravel. On her appearance on the ITV show This Morning on January 7, 2026, Nelson was seen without her engagement ring while speaking about her daughters’ health, sparking speculation about a possible breakup.

Now multiple outlets report that the couple has indeed ended their romantic relationship — though they remain united in their commitment to co-parenting their eight-month-old girls.

Jesy Nelson Twin Daughters Diagnosed With Rare Genetic Condition

The reported split comes shortly after Nelson publicly revealed her daughters had been diagnosed with Spinal Muscular Atrophy (SMA) Type 1, an extremely serious genetic disorder affecting muscle strength and survival. In a heartfelt video posted to Instagram in early January 2026, she explained how the condition has already shaped her daughters’ early lives.

SMA Type 1 is described by health authorities as the most severe subtype of spinal muscular atrophy — a progressive disorder that weakens muscles used for movement, breathing, swallowing and more. Without treatment, life expectancy for infants with SMA 1 is historically short, often measured in months or a few years at best.

Nelson recounted how her twin girls would “probably never walk” and might not regain neck strength or other motor functions previously taken for granted. She called the experience “heartbreaking” and said the last few months have been the most difficult time of her life.

Response and Treatment

Despite the grim nature of the diagnosis, both parents have publicly shown their love and devotion. Zion Foster shared a touching tribute on Instagram, calling their daughters “two little warriors” and expressing his deep affection for them during this challenging time.

The girls have received treatment, including gene therapy, at Great Ormond Street Hospital in London — a procedure designed to halt or slow the progression of SMA, with early intervention offering the best chance of improved outcomes.

Co-Parenting and Priorities

While the romantic relationship appears to have ended, inside sources emphasize that Nelson and Foster are focused on remaining united as parents, prioritizing their daughters above their personal lives. A friend told The Sun that the duo remain friends and are dedicated to their children’s care and support.

Both Nelson and Foster have refrained from publicly commenting on the split itself, focusing their social media attention instead on their children and awareness campaigns related to SMA.

Jesy Nelson’s Advocacy and Awareness Efforts

In addition to coping with the emotional toll of the diagnosis, Nelson has also used her platform to push for broader awareness of SMA Type 1. She has launched a petition urging the UK’s National Health Service (NHS) to include SMA screening in the standard newborn blood test — commonly known as the heel-prick test — arguing that early detection could lead to earlier and more effective treatment.

Officials, including the UK Health Secretary, have acknowledged her campaign and indicated plans to review current screening protocols, underscoring the potential systemic impact of Nelson’s advocacy.

Public Reaction

Fans and followers have expressed sympathy on social media, with many praising Nelson for her openness about her family’s struggles and urging kindness amid speculation about her personal life. Online threads emphasize support for the singer and her children during an incredibly challenging period.

Observers note that the strain of caring for medically fragile infants can place enormous pressure on relationships, and many see the reported split as a sober decision to focus on stability and co-parenting rather than continuing a partnership that may no longer have been sustainable.

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