While they both got small cloud tatt's at the beginning of their relationship (last week), they have now gotten "H2GKMO" on their hands.
In fact, their friends Courtney Chipolone, Brian Nicholson and Scott Nicholson got the exact same ones.
So, wtf is "H2GKMO"?? It means "Honest 2 God knock me out."
It's not the only ink Pete has gotten for Ariana either. Just a couple weeks ago, he got her initials "AG" and her iconic Dangerous Woman bunny tattooed on his bod.