Rock Center   |  February 07, 2013

Who craves romance more, men or women?

In a new book that explores what normal is when it comes to relationships between romantic partners; Natalie Morales sits down with one of the authors of "The Normal Bar," Chrisanna Northrup and her husband Mark Northrup. The couple opens up to Morales about how the revealing survey results helped save their 15-year marriage. Natalie Morales' full report airs Friday, Feb. 8 at 10pm/9c on NBC's Rock Center with Brian Williams.

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