The world can't get enough of Ariana Grande [1] right now, with very good reason. Not only is she burning up the charts [2], she's also ruling the late-night circuit — if you haven't seen her Carpool Karaoke yet, go and watch it now [3]! Shortly after the release of her new album Sweetener [4], she stopped by The Tonight Show Starring Jimmy Fallon [5] to have a mini listening party featuring a few tracks from the album. She discussed her favorite songs and gave the audience a little live snippet of "R.E.M.," as well as sharing the story behind "Breathin," which is about her struggles with anxiety.

But Ariana didn't just give us viewers an album party: she also spoke about her relationship with fiancé Pete Davidson. Her new album has a song named "pete davidson" and the 25-year-old said she wrote the song just a week after the pair started hanging out. Much like Pete's interview with GQ [6], Ariana also told Jimmy that she had the "biggest crush on him" when they first met on Saturday Night Live [7], years before they actually began dating. She says she knew she'd be "marrying him, 100 percent." Watch the full video to hear Ariana tell the story for herself.