George Shelley has had the "hardest 12 months of his life" following his sister Harriet's passing.
George Shelley
The former Union J star has "really struggled with the grieving process" after his younger sister passed away after being hit by a car and admitted it has affected his mental health.
He said: "It has been the hardest 12 months of my life, without shadow of a doubt. I really struggled with the grieving process and how it affected my mental health, but one thing I've learnt about this is that talking about these things - talking about grief, talking about mental health - it helps get through the process. That's why I'm making a documentary with BBC Three about the grieving process and the different coping mechanisms that are available. I know a lot of young people find it difficult to talk about mental health, grief in particular, so I'm hoping that by me talking about this and making this documentary, it's going to help a lot of people in a similar position."
And in the accompanying caption, the 24-year-old singer - who is making a documentary about grief - hopes opening up himself can help other people too.
He wrote: "This is the toughest thing I've ever had to do on every level, but if it helps just one person as much as it's helped me over the last few months, I can find pride and comfort in sharing my experiences. Thanks @bbcthree for guiding me through this journey x (sic)"
Whilst Damian Kavanagh, controller of BBC Three, said: "At BBC Three, we have a strong tradition of commissioning impactful documentaries that provides young people with a platform to tell their stories. It is the type of thought-provoking programme we have become known for and we're very proud to be working with George on this incredibly personal film that tackles a subject we know will resonate with countless people due to how it tragically affects so many."
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