Matthew Boggs, whose parents divorced, was jaded about marriage. But he noticed his grandmother and grandfather, who had been married for 63 years, where still madly in love. To find out what was the secret to a long and happy marriage, Boggs and his friend, Jason Miller, traveled 12,000 miles around the U.S. to talk to what they call the "Marriage Masters," couples who have been married 40 years or more. In their new book, "Project Everylasting," Boggs and Miller share advice from the happy couples.

This article from iVilliage goes on to give 7 tips from the authors including: There's no such thing as a perfect marriage, only perfect moments, Never Stop Dating, The Discipline of Respect and more. What's your secret to marriage? Click here to sound off on our message board.

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