Justin Bieber Says He's Single, Announces US Stadium Tour

The singer also announced his U.S. stadium tour.

— -- Justin Bieber has a very big announcement.

"I'm not dating anybody. I'm single," he said today on "The Ellen DeGeneres Show." "I'm not really looking either."

Bieber, 22, who's on his Purpose World Tour, did admit that the hardest part of being on the road is battling loneliness.

"That's probably the hardest thing," he added, "just being alone all the time because I'm always alone."

Still, that wasn't Bieber's big announcement.

The Canadian-born singer revealed that he's extending his Purpose World Tour to hit up North American stadiums for the first time ever.

This leg of his tour will start Aug. 5, 2017, at the Rose Bowl Stadium in Pasadena, California. Bieber will also make five other stadium stops, concluding in Toronto's Rogers Centre.

Tickets for the stadium tour go on sale Tuesday with some of the proceeds going to Pencils of Promise, a charity that helps to build schools and foster education in developing countries.