Justin Bieber and Selena Gomez are reportedly "exclusive".

Justin Bieber

Justin Bieber

The 23-year-old singer and the 'Fetish' hitmaker - who previously had an on/off romance from 2010 to 2015 - are thought to have rekindled their relationship after Selena called things off with fellow musician The Weeknd, and sources now claim the pair aren't looking to see other people as their romance is hotting up.

A source added 'Entertainment Tonight': "[They are] exclusive. They're really happy and enjoying this time together. They've both grown a lot over the years and are excited to have reconnected.

"Justin definitely had to prove himself to her friends to regain their trust and he's doing a good job. Her friends have come around and can see that this time is different."

It comes after insiders recently revealed the 'Sorry' hitmaker and 25-year-old Selena were keen to keep their budding romance "low-key", as they don't want the "chaos" of a public relationship.

A source said: "They are great and very happy. It just got too crazy last week with all the attention.

"Justin canceled his tour to take care of his mental health and he wants to continue to focus on this. He didn't like the chaos, they agreed to stay more low-key."

Whilst another source added: "Everything is okay with them. They just backed off a little from being out there and are being a bit more low-key."

Meanwhile, it was previously revealed that Selena views Justin as her "first love".

An insider said: "Justin was Selena's first love. He will always have a special place in her heart. She's always held out hope that one day the circumstances and timing would be right."

And another insider added: "Justin is doing great. Spending all week with Selena is the dream week for him. He is trying to take things slowly, but it hasn't really worked. He is too excited to spend time with her.

"He is waiting for Selena to tell him that they are officially back together. He doesn't feel any rush, because no doubt they are already emotionally back together. Justin still needs to win her family over and he knows it will take some time. But he very much feels he is a different person.

"He knows what he did wrong in the past and understands that Selena deserves better. He wants to be with her and will do anything to prove he can be a great boyfriend."