Tom Mann is honoring the life and legacy of his “best friend” and fiancée, Dani Hampson.

The former X Factor star—who auditioned in 2014 as a solo artist before being grouped into the band Stereo Kicks—shared that his partner Dani passed away on June 18, the day they were set to get married. Dani was just 34 years of age.

“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,” he wrote in a June 20 Instagram post. It was the most difficult day in our lives. “I feel as if I’ve cried an ocean.” Although we didn’t make it to the altar, nor did we get to dance our first dance or say our vows together, I am certain that Danielle and I both knew that you were my whole world.

Tom is now promising to wear his wedding ring as a sign of his “unconditional” love for Dani, who gave birth to their son BowieIn October 2021.