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11 May 2012, 16:17
The 'Scream' star says the 18-year-old singer keeps him on his feet.
Usher has admitted that his friendship with Justin Bieber makes him feel old.
The 'Scream' star, 33, said the 18-year-old always pokes fun at him when he can't do something, but that it "keeps me on my feet".
In a joint interview with Justin, Usher said: "He always makes me feel like I'm old! Anytime he comes around me, he's messing with me about my phone, or how slow I type.
The 'Boyfriend' star then replied: "He didn't even know what iChat was!"
"I love it, though. He keeps me on my feet," Usher replied. "The one thing I do see in him is the passion and the determination to really tell an incredible story and articulate himself as an artist.
"Whether Justin is up or down, I want to be that person who he knows will be around for him no matter what: 'Whether the world is singing your song or not, you got a brother that rocks with you in me.'"
Usher added: "All great things in life happen because of a family structure, in some way - this is a dynasty, a movement, a magic that will be successful because we both love what we do and share that bond. We started that way, and it's been that way to this day; that can't be replaced."
Usher and Justin are both among the artists set to perform at Capital FM's Summertime Ball at London's Wembley Stadium on 9th June.