Los Angeles, April 3 (IANS): Singer Justin Bieber, who has attracted a lot of controversy for his behaviour, admits he finds it harder to trust people these days except his four friends.

"I get good vibes from people all the time, and I probably could get along with them and be their friend, but now I just don't trust anybody," Bieber told Teen Vogue magazine, reports contactmusic.com

"Literally, my phone never rings. I only have ... four people that I keep in contact with," he said.

"I don't need a bunch of friends to make me happy. I just need the people close to me that I love, that's all," he added.

The 19-year-old has attracted a lot of criticism recently for a string of incidents including showing up late for a concert.

Despite all the problems, Bieber believes his fans still support him.

"My Twitter is really nice. I have so many fans that I rarely ever see a nasty tweet. I see so much stuff on the Internet, sometimes I just want to go to Twitter and just go after people," he said.