Justin Bieber and Martin Garrix FaceTime ''every now and then''.

The 23-year-old musician and the 20-year-old DJ - who is supporting the Canadian star on his tour when it hits Australia - has admitted the pair have struck up a close bond since working together because they share a lot of similarities and can discuss a variety of topics with one another.

Speaking about their relationship to The West Australian newspaper, the 'In the Name of Love' hitmaker said: ''We're both young, both touring on the road a lot and both love music. We can really talk about that.

''He said, 'You should come with me to Australia, it's going to be crazy', and I was like, 'Yeah, let's do it'. Besides this tour we are also very good friends, we Facetime every now and then. Good times.''

And Martin - whose full name is Martijn Gerard Garritsen - is desperate to do more sightseeing than partying when he goes down under.

He explained: ''But that's what I always say and then I end up partying. I really hope to see some more of Australia, do some tourist sights in-between and be able to relax.

''I don't want to exhaust myself in the first two weeks. I want to work on some new music here, be inspired.''