Ben Affleck Jennifer's Got My Back

3/15/2017 9:47 AM PDT

Ben Affleck Hanging with Jennifer Garner After Completing Rehab

Ben Affleck's support system is right in front of him ... literally.

Ben and Jennifer Garner were out Wednesday in Santa Monica just 1 day after Ben announced he completed rehab.

As we reported, their divorce is still full steam ahead ... but they are serious co-parents who not only get along ... they still support each other.