Phoebe Cates & Kevin Kline — 31 Years
When it comes to celebrity marriages, Phoebe Cates has smashed pretty much every stereotype out there. First, she got married to a guy who is 16 years older than her, and she has been a part of that same marriage for 31 years now.
Since her father was a part of Broadway productions, Cates was no stranger to stage acting. She has been a part of several different films, including Fast Times at Ridgemont High (as Linda Barrett) and Gremlins (as Kate Beringer). She has also played the role of Sophia Gold in The Anniversary Party (2001).