United Kingdom, Feb. 13 -- Justin Bieber is "happier than he has been in a long time", according to an insider.

The 30-year-old pop star - who is married to model Hailey Bieber, 28, and has six-month-old son Jack with her- has insisted that he is a "happy camper " right now and is in a good place.

A source told UsWeekly: "Justin is a happy camper right now, he's happier than he's been in a long time."

In recent weeks, the 'Peaches' hitmaker has caused some concern amongst fans after he unfollowed his wife on Instagram, and has been spotted leaving a spa in LA looking disheveled on more than one occasion.

But the insider insisted that these are not the signs of a "breakdown" and he "doesn't care" what others think anyway.

The source a...