Pete Davidson & Ariana Grande 2 Happy Love Birds ... 1 Angry Bird

6/25/2018 7:08 AM PDT

Pete Davidson and Ariana Grande Get Handsy out in NYC

The smiles on Pete Davidson and Ariana Grande say it all ... they're ecstatic together, and anyone hating on that, well, Pete's got a special message for ya too.

Pete and Ariana were hanging out in NYC over the weekend ... and they're practically inseparable at this point. The happily-engaged couple were all smiles and Pete had a little fun with paps ... cheerily flipping 'em the bird.

They moved in together and the digs are pretty spectacular ... it's a $16 million New York apartment in the sky!