Chris Pratt Just 2 Love Birds ... Riding Our Birds

8/6/2018 10:04 AM PDT

Chris Pratt & Katherine Schwarzenegger Rolling on Scooter Date

Chris Pratt and Katherine Schwarzenegger's relationship has hit cruise control ... thanks to a couple of Birds.

Chris and Katherine jumped on a couple of those super popular Bird scooters Sunday in Brentwood on their way to a family dinner at Mom Maria Shriver's pad. Chris seemed serious at first, but eventually cracked a huge grin. Birds are fun.

As we reported ... Chris' kid, Jack, has been warming up to his dad's new GF. The trio looked like a picture-perfect fam bam out together last week in Malibu.

It's obvious both families are on board with this couple. It's just how they roll.