Dating rumors sparked after Cabello shared a series of cute Instagrams

By Nick Maslow
Updated October 05, 2016 06:19 PM
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Shawn Mendes and Fifth Harmony‘s Camila Cabello would be a match made in pop music heaven, but a source tells PEOPLE “they’re just friends” despite a recent report that the “Stitches” singer, 17, has been dating the "Worth It" singer, 18.

The duo became pals when Mendes and Fifth Harmony joined her then-boyfriend Austin Mahone‘s headlining tour in 2014. Cabello and Mahone called it quits last November, over one year after PEOPLE first reported on their relationship.

Cabello has not been shy about showing her connection with Mendes on Instagram, sharing pictures of the duo hanging out over the past couple months. Most recently, the stars leaned on each other backstage at the iHeartRadio Music Festival this past weekend.

“@shawnmendes and i are in desperate need of caffeine. #iheartradio,” she captioned their sweet moment on Sunday.

Additional posts capture Mendes playing a joke on Cabello while she sleeps and the musicians singing together.

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The speculation comes at an exciting time for both stars. While Fifth Harmony gears up for their next album, Mendes has been busy making a name for himself with his hit single and touring with Taylor Swift on her 1989 tour over the summer.

Not everyone has become a Mendes fan just yet. During a radio interview earlier this month, Justin Bieber admitted he didn’t know about his fellow Canadian singer. (He soon rectified his mistake.)

Reporting by PATRICK GOMEZ