Harrison Ford knows the work it takes to make love last.

During an appearance on NPR's " Wild Card with Rachel Martin," the 83-year-old “Shrinking” actor spoke candidly about love and relationships, including his 15-year marriage to actor Calista Flockhart.

After host Rachel Martin asked Ford what age has taught him about love, Ford replied, “Old people can love, too.”

“You know, you think about falling in love and all of that business," Ford explained. "You think it’s the business of youth or something, you know, and staying in love is the issue. Maintaining, nurturing, basically, not f---ing up.”

“We all who are in love or in relationships work on that every day,” Martin said.

“With some days off for bad behavior," Ford added.

Martin then asked Ford how long he's been married.

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