Professor Green's father died in 2008 and he still finds it hard to talk about him and feels that grieving is a never ending process.
He sings about his father in the 2011 single Read All About It;
"He was always the parent I favoured but as a child it was complicated.
"He was always in and out of my life; at 18 we stopped talking and after five years I decided to reach out to try and arrange a meeting.
"Unfortunately we ended up arguing and the last words I said to him were, 'I hate you.' The terrible thing is I never got to see him again because a few months later he killed himself.
"The moment I found out my dad had taken his own life is still as clear today as it was the moment it happened. I kept wondering why no one had seen it coming.
"I still find it quite difficult to articulate how I felt. It's been six years since it happened and the weird thing about grieving is it never stops."
He now supports CALM- Campaign Against Living Miserably, which helps to prevent male suicide and wishes he could have done more for his father while he was alive.
Speaking on BBC Lifeline documentary 'CALM', which he hosted, he said: "Society likes to tell you you have to be happy all the time which makes it easy for you to think that if you're not then there's something wrong with you.
"But happiness isn't something you can feel all the time, and here's the key, neither is sadness; I just wish my dad had known that."