Celebrity stylist and the former boyfriend of actress-singer Sheridan Smith, Graham Nation, died after collapsing in his gym in Los Angeles on Valentine's Day. He was 39 when he breathed his last.

According to LA County Department of Medical Examiner, Graham died while working out at a gym in Los Angeles on February 14. The exact cause of his death is yet to be ascertained and an investigation is underway.

Post Graham's death, his talent organisation issued a statement, which read, "Graham was a one-of-a-kind soul who impacted every single person he met. We are honoured to have been part of his journey and to have helped him share his artistry with the world. Our hearts are broken and we will miss him dearly."

On the day of his death, Graham had posted a picture of Marissa Bode on his Instagram handle, whom he had styled for the Artios Awards. On February 10, he also shared a post about styling Catherine O'Hara.

"My first ever Super Bowl commercial!What an absolute blast to work on, Thank you Cathrine O’Hara for having me apart of this epic commercial (sic)," he wrote.

During his career, he also styled Demi Moore, Jared Leo, Venus Williams, and others.

Graham and Sheridan dated for a brief period in 2017, and during their relationship, she called him her "dream man". They even lived together at the actress' London home.

But soon after, they broke up, but they continued to remain cordial despite the split.