11/23/2012 10:34 am ET

Justin Bieber, Lonely? 'Yes,' He Tells Oprah

Justin Bieber is a world icon, a pop superstar, and can't walk down the street without being mobbed by screaming fans, but Oprah wants to know: Does he ever get lonely?

"Of course I get lonely sometimes," Justin tells her.

Yes, even Justin Bieber has his down days. He admits to Oprah, "I get days where I'm just down and gloomy... because some days you feel what you've gone through… you have pain in your heart."

Tune in to "Oprah's Next Chapter," Sunday, Nov. 25 at 9 p.m. ET on OWN, for one of the most in-depth interviews Justin Bieber has ever done.