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Fifth Harmony may "Never Be the Same" without Camila Cabello ... but she's all for their recent reunion!

CC showed her former bandmates Ally Brooke , Dinah Jane , Lauren Jauregui and Normani some love on social media following their surprise reunion at the Jonas Brothers concert over the weekend ... commenting 4 heart emojis under the video of their time onstage.

As you know, Camila was a founding member of the band after the girls were grouped together on "The X Factor" in 2012, but she left in December 2016 to pursue a solo career.

There was plenty of buzz about why Camila really exited the group ... and rumors of tension after the girls had a fifth person jump backward off the stage at the top of their performance at the 2017 MTV Video Music

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