Ben Affleck and Ana de Armas' PDA Double Date With Matt Damon and Wife

Ben Affleck and Ana de Armas are looking madly in love these days, and they're even doing steamy double dates with Matt Damon and his wife.

Ben and Ana packed on some mouth-on-mouth PDA Monday in Malibu, rolling around in the sand, and taking a romantic stroll down the coastline.

Typical hot date -- lots of passionate kissing, tight hugs, and smiles all around -- but this time Matt and Luciana were tagging along. Yeah, they got that awkward front seat to Ben and Ana's make-out session.

Take note, Ben did have a face covering, but with all the kissing it remained firmly in his back pocket. Can ya blame him?