From: mytelevision.com  

The couple, are thought to have one of the most solid marriages in show business and Travolta is refreshingly down to earth about the secret of their success. "We believe in communication and we use that to solve problems." "Any relationship has a better shot at longevity when two people are really right for each other. If they go off the tracks, it's still easier to fix than two people who are not right for each other at all.”

Their Compatikey Result

More on relationship from John Travolta: "I don't care who you want to be with. If you want to be with a monkey, then fine, it doesn't matter, you both make up your needs and want list. I mean list everything you need and want from the other person: how much sex you want; what kind of food you want to eat; is your bed soft or hard: where you want to live. Then you say to yourself, 'that's my ideal scene.' Then you find someone and weigh up how close your ideal scene is to theirs." He adds: "If the inherent needs are way off, you're not even going to get through the first year, so don't even go there. It may sound unromantic, but it's that simple."