Justin Bieber has a new girlfriend.

The 'What Do You Mean' singer admits there are certain situations he is shy of because he is ''scarred'' from his relationship with Selena Gomez - who he had an on/off romance with between 2011 until 2014 - and how she reacted to certain situations.

Asked if he thinks he'll compare all his future relationships to what he had with Selena, he said: ''Yeah. You get scarred from certain things. Even like -- I'm kind of seeing this girl, right? I'm shy about doing or saying certain things, and then I say it and it's not even a problem.

''And I'll remember when I couldn't.... You're just scarred and you don't do something because in your last relationship they'd freak out, but [the new person is] just like, 'What are you talking about?' ''

The 21-year-old star also revealed he used to live with Selena and thinks their relationship hit the rocks because it was so intense.

He explained to the new issue of Complex magazine: ''I moved in with my girlfriend when I was 18. Started my own life with her. It was a marriage kind of thing.

''Living with a girl, it was just too much at that age. But we were so in love. Nothing else mattered.

''We were all about each other. But when it's like that and you get your value from that, people will always disappoint you. Your girl or your dude, they're always going to disappoint you.

''Your full identity can't be in that person. My identity was in her. Her identity was in me.

''When stuff would happen, I would lose my freakin' mind, and she would lose her mind, and we would fight so hard because we were so invested in each other.''