Popsugar Celebrity Celebrity Instagrams How Long Have Ariana Grande and Pete Davidson Been Dating? 14 Moments in Ariana Grande and Pete Davidson's Relationship That Prove When You Know, You Know August 17, 2018 by Monica Sisavat Solís View On One Page Photo 4 of 14 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 May 2018: Ariana and Pete Begin Dating News broke in late May that Ariana and Pete had "just started" seeing each other casually. Previous Next Start Slideshow Ariana GrandePete DavidsonCelebrity InstagramsCelebrity CouplesCelebrity Facts