4. Jay- Z and Beyonce Knowles

 BEYONCE KNOWLES and JAY-Z at the 77th Annual Academy Awards at the Kodak Theatre, Hollywood, CA February 27, 2005; Los Angeles, CAPaul Smith / Featureflash/Crestock.com

Age Gap: 12 years

This is one relationship that has endured the test of time. Beyonce started dating musician Jay-Z at the tender age of 19 in 2001 while he was 31. After courting each other for almost 7 years the pair tied the knot in 2008. Four years later they were blessed with a beautiful baby girl Blue Ivy Carter.

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