X Factor contestant Tom Mann has revealed that his fiancé and mother of his son sadly passed away on the morning of Saturday, what was meant to be their wedding day.MORE: BGT judge Simon Cowell's £45million property portfolio will blow your mindTaking to Instagram, the singer shared the heartbreaking news alongside a black and white photo of Dani Hampson and their son Bowie.WATCH: Simon Cowell's teeth before and after: What has BGT star done to his teeth?"I can't believe I am writing these words but my darling Dani - my best friend, my everything and more, the love of my life - passed away in the early hours of Saturday morning, 18th June.RELATED: Why Simon Cowell's grand London home with fiancée and son is rarely picturedMORE: Simon Cowell's immaculate Malibu beach house will make you green with envy"On what was supposed to be the happiest day of our lives ended in irreversible heartbreak. I feel like I have cried an ocean.