RadarOnline.com can reveal Simon Cowell's brother opened up about the late One Direction star's mental health and the secrets he took to his grave after falling to his death in Argentina.
Tony Cowell said Liam's death has been "so difficult" for Cheryl, 41, as well as their seven-year-old son, Bear.
He said: "I feel for Cheryl, as I know Liam never stopped loving her and Bear ... I can't imagine her pain. Louis Walsh is devastated too. He told me, 'Liam had this star quality about him. I will miss him.'
"It's been moving to see this outpouring of grief around the world for Liam. I want to remember him as a beautiful young man, a normal kid trying to battle his demons."