And, sadly, it seems Jesy Nelson’s relationship with Zion Foster couldn’t take the strain, with sources last week saying the couple have split just four months after getting engaged. Earlier this month, Jesy revealed the heartbreaking news that their daughters, had been diagnosed with Spinal Muscular Atrophy Type 1 – a progressive muscle-wasting disease. jesy and zion are parents to their twin girls ©Ricky Vigil M / Justin E Palmer/GC ImagesAnd now, sources have revealed that while there is still love between Jesy and Zion, their relationship had been struggling. Currently under the care of Great Ormond Street Hospital, Jesy and Zion’s daughters have received life-saving gene treatment, but still face an uncertain future. Explaining the severity of the condition, Jesy told fans, ‘We’ve been told they will probably never walk.