Yup, weird enough, even plenty of couples we know are like that. They never do ANY activity on their own, with just mom, dad and kids. Always there have to be befriended couples, the grandparents, brother-sister with their families. Even when they go on holidays, never alone.
And when they are alone: major fights :-)

!ALIVE
!INDEED
!BBH
!HOPE
!PIZZA
!WEIRD