He's dated some of the world's most beautiful and famous women including Miley Cyrus, Gigi Hadid and Olivia Culpo, and Nick Jonas appears to be back with another old flame if his Instagram profile is anything to go by.

The 24-year-old Jealous singer cosied up to his ex-girlfriend, Delta Goodrem, in his latest social media snap – who is a singer and actress from Australia – after splitting over five years ago.

Sending his 12.5m followers into a frenzy, the black and white snap saw the pair fashionably coordinated in double denim as Delta leaned her arm on his shoulder.

Though Delta has recently been romantically linked to TV co-star Seal, this latest snap most definitely quashed those rumours.

Nick posted two more shots from his evening spent with friends as he captioned the post: "Good night with good people."

Shocked fans commented in their droves on the rumoured reconciliation, with one person writing: "WAIT HOLD THE PHONE it's 2017, not 2011 Nick.... but Delta ages like a fine wine that's for sure"

Another put: "OMG!!! Can't believe it! " while a third added: "NELTA YEEESSSSS"

#TheVoiceAu LIVE FINALS 🔥👑 #KINGJUDAH REIGNS! We did it #TeamDelta 💕my tribe are like no other... you have my back and I have yours 😍 what a season! So much love #BACKTOBACK XOXOXOOX #GetTheLook 💃👠 💍 Custom dress by @fameandpartners Custom earrings by @affinitydiamonds Shoes by @jimmychoo Styled by @fleureganstyle #GlamSquad 💋💄@michael_brennan  @nonimakeup @nailsbykelsydney  @missbettyrose ❣️ 📸 by @joedadic A massive thank you to all of the incredible designers for your magic this season! xx

A post shared by Delta Goodrem (@deltagoodrem) on

Nick opened up about his ex-girlfriend back in 2015 and suggested they were still friends, telling radio's Fitzy and Wippa that he has nothing but love for the star, stating: "There's no issue, she's great, I love her."

The pair dated when he was 18 and she was 26, and when they broke up in February 2012 the former Neighbours star said that there was "genuine love" between the couple.

Nick's last serious relationship was with Miss USA Olivia Culpo. Following their break-up in 2015, he said: "I wish the best for her in the future and we had a great two years."