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 10 of 14 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 10 June 2018: Ariana and Pete Get Matching Tattoos The couple got matching hand tattoos of the acronym "H2GKMO," which stands for "Honest to God knock me out." Previous Next Start Slideshow Ariana GrandePete DavidsonCelebrity InstagramsCelebrity CouplesCelebrity Facts