He's a multiplatinum superstar, but Justin Bieber tells Oprah Winfrey 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. "Oprah's Next Chapter" airs Sundays at 9 p.m. ET on OWN.