Jesy Nelson reveals SHE was the one who ended her relationship with fiancé Zion Foster and says their twins' SMA battle 'tore them apart' after he admitted he was 'just surviving' amid their diagnosis

The singer, 34, revealed in January her now one-year-old twins, Ocean and Story, had been diagnosed with Spinal Muscular Atrophy (SMA) Type 1, a rare muscle-wasting condition .