Longest celebrity relationships (51 images)

Here's a collection of celebrity relationships that stood the test of time.

Michael Douglas (L) and his then girlfriend, actress Catherine Zeta Jones, on September 26, 1999, at an NBC TV party celebrating the 25th anniversary of the comedy series "Saturday Night Live" in New York City. Jones and Douglas got married on November 18, 2000. File Photo by Ezio Petersen/UPI | License Photo
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