The 25-year-old singer performed at the Amazon Music Unboxing Prime Day Event in Brooklyn, New York, along with Kelsea Ballerini, Alessia Cara and Julia Michaels, and her fiance seemed to be getting along nicely with her work squad.
Following the show, Davidson took to Instagram to share pics from their night together -- including a hilarious photo shoot with Grande's backup dancers.
"Check out my new job," the 24-year-old Saturday Night Live star quipped alongside a black and white snap of himself with eight of Grande's male dancers.
Grande also got in on the fun, posing over Davidson's shoulder while he laid on the ground surrounded by her performers. In the one of the pics, the pop star has her eyes closed and her signature ponytail tossed backwards, and looks thrilled to be with her beau.
Davidson also posted an Instagram pic of two Polaroids that show him with three guys by what appears to be a tour bus. "Murdaburgers," he captioned the post.
Grande got in on the posting action too, taking to her Instagram Story to share some of her favorite moments from the night. In addition to a video of the couple holding hands, she also shared two more shots of her and Davidson with her dancers.
The "Bang Bang" singer went on to twice share an adorable snap of her fiancé as a little boy. "Mood for life @petedavidson. kind of crying...... kind of killing it n keeping a positive outlook. this is the best photo on earth," she initially captioned the throwback photo before posting it again.
Grande couldn't end the posting spree without telling Davidson that she loves him, which she opted to do with a photo of herself from an appearance on a late-night talk show.
The Instagram frenzy came after Grande brought down the house at Amazon's event with a mix of fan favorites and new tracks from her upcoming album, Sweetener, which drops on August 17.
Wearing a sparkly crop top and orange parachute pants, Grande sang “No Tears Left to Cry” and “The Light is Coming,” before closing out the show with a choreographed umbrella dance.