Well, if the relationship is dead the marriage is dead. For those divorced men who marry young ladies, if they don't know how to build up relationship in normal life, they will end up with unhappy experience.
To maintain, protect and grow the relationship is the key. My wife and I are both 38 (we are middle school and high school classmates). She always give me the same smile when we were in schools and she gives me a lot of freedom. I am always happy with my life and really enjoy everyday. I don't think any good school, pretty lady can bring me a better life than what I already have. :)