11/26/2012 09:25 am ET

Justin Bieber: 'I Don't Have a Lot of Friends' (VIDEO)

He's a multiplatinum superstar, but Justin Bieber tells Oprah Winfrey on "Oprah's Next Chapter" that he really only has a handful of friends he can trust.

On the way to his sold-out Chicago concert, Oprah says she tried to imagine what it's like to be Justin, a small-town kid who's now one of the most-watched people on YouTube. Justin reveals why it's hard to make new friends and find people he can trust at this stage in his life.

"It's hard," he says. "I try to keep the people that have been around me since the beginning close to me. I really don't have a lot of friends. I have like three close friends that I'll fly out to see me, or iChat with, or call, but that's really the truth."

Justin also has a message for fans who insist he's "changing."

"I'm just getting older," he says. "I'm just growing up, guys. Although being a teen heartthrob is fun, and I love the screams and the girls thinking I'm hot and stuff -- that's not a bad thing -- but I want it to be about my music and I want people to really respect my music. This isn't a gimmick."

"Oprah's Next Chapter" airs Sundays at 9 p.m. ET on OWN.