The Saturday Night Live star's tattoo artist, London Reese, commented that "Pete loves him some Ariana."
Not long after his post, Grande posted her own Instagram story gushing right back at him. In a dark, close-up of her eye, the "No Tears Left to Cry" singer thanks fans and tells them how happy they make her, followed by a very personal good-night message.
"Pete Davidson is the best person on earth, goodnight," she wrote on Instagram.
A day prior to posting about Grande's performance, the 24-year-old comedian opened for Dave Chapelle at the Borgata Hotel Casino and Spa in Atlantic City, New Jersey, and an eyewitness tells ET that Grande was in the audience to watch her guy's stand-up routine. While he didn't mention the 24-year-old pop star during his set, Davidson did pose for a photo with his girlfriend backstage on Friday night, alongside fellow comedian Wil Sylvince.