Bieber, who launched his career with the help of YouTube, also is a big Twitter user, Parade magazine said. Bieber has more than 4.4 million followers on the micro-blogging site.
The singer teased into the announcement using Twitter, the reporter said.
Bieber tweeted, "This TOUR is INCREDIBLE!! Only problem is this guy keeps following me show to show. @jonmchu why r u following me dude?"
Chu responded with his own tweet, Parade reported, saying, "Yo @justinbieber. ...You think we should give them the big news?"