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Aww they're cute!

Mac Miller took to Instagram to wish girlfriend Ariana Grande a happy birthday, and he sounds like one smitten dude!

"Happy Birthday to this adorable pure soul who has reminded me what being happy feels like. Thank you for loving me so good. I think it’s supposed to be 'so well' but I don’t care. I love you and can’t wait for all of the adventures," he captioned a snapshot of the duo kissing at the Eiffel Tower.

It's been a rough month for the "One Last Time" songstress, following the terror attack at her Manchester concert. The chart topper recently wrapped her world tour, and thanked her fans for their incredible support.

"At the close of this European leg of my Dangerous Woman tour, I just wanted to thank you properly for the overwhelming love and support you’ve shown me, my crew, and each other during this challenging time. Spending this time with you this month has been so very healing and special! Thank you for being here. Thank you from the bottom of my heart for your generosity in supporting One Love Manchester and for helping the families as much as you possibly could. Thank you for bringing your absolute brightest, most passionate, contagious energy to these shows and for wiping my tears away. ♡ I'm immensely grateful!!!! I hope you can feel my love, wherever you are because I'm sending you all that I've got. See you so soon," she wrote on social media.

Rumors have been swirling that the couple are secretly engaged, but if he hasn't already, he should put a ring on it!