The One Direction star features on the cover of Rollacoaster magazine.
Liam is about to become the fourth band member to release solo material.
The singer revealed that he and Justin Bieber confide in each other about the pressures of the industry and dealing with their “chaotic lives”.
He’s a great guy — inside there’s a really good heart. I said, ‘Look, the difference between me and you is I had four different boys going through the same thing to look to. He didn’t have that.’ “I said to him, ‘Take my number and any time you want a chat, let me know as I’m here and I understand exactly what you’re going through and I understand your world.’ He needs somebody like that and in that position.