The Sex and the City star said the two often discuss what will happen when 8-year-old James and 2-year-old twins Tabitha and Marion have grown up.
"We talk a lot about when the kids are grown and gone and all the things we'll do," Parker said, according to Bang! Showbiz. "We go to the theatre and to dinner and we occasionally see friends."
Parker admitted that although she rarely gets any time to herself, she enjoys 'guilty pleasure' television when the children are asleep.
"What I do is watch House Hunters International," Parker continued. "It's not even a guilty pleasure - I make very public statements about how much I love it."
The actress recently revealed that a third Sex and the City film is not yet in the works.
Parker can currently be seen opposite Greg Kinnear and Pierce Brosnan in the romantic comedy I Don't Know How She Does It.
> I Don't Know How She Does It - review
Watch Sarah Jessica Parker in the trailer for I Don't Know How She Does It below: