Lisa Marie Presley and Michael Jackson: 20 months. Carmen Electra and Dennis Rodman: 5 months. Kim Kardashian and Kris Humphries: 72 days. Ernest Borgnine and Ethel Merman: 32 days. Cher and Gregg Allman: Nine days. Britney Spears and Jason Alexander: 55 hours. If these celebrity lovebirds can't make it, what chance do the rest of us have for a meaningful, long-lasting relationship?

Pretty good actually. According to the U.S. Census Bureau, the average first marriage in the United States lasts eight years.

We talked to one fairly average couple (together more than seven years), one way-above-average couple (together two decades) and one newlywed couple (together seven months), to find out how they keep love alive.

Coy and Claire Wire:
Coy is a former NFL player who now works as a sports analyst. He and Claire have been married for seven years. The Wires say being adventurous is the key to keeping romance in your marriage.  

Claude and Tracy Guillaume: 
Claude is the general manager of Davios, a popular Northern Italian Steakhouse in Atlanta, and Tracy is a jewelry maker. They have been married for 20 years. For them, it's the simple things: a morning kiss, an unexpected text, just holding hands... all go a long way to making a marriage last.

Asante and Jeniva Samuel:
Asante plays football for the Atlanta Falcons. He and Jeniva have been married for seven months. This self-proclaimed "power couple" says keeping the lines of communication open is how they plan to make their marriage one for the record books.

Sound off: How do you keep your relationship hot? Leave us your (family friendly) advice in the comments!