As we grow and mature our interests and out look on life changes. The couple that accepts this and changes together will be happy. A marriage is a coupling of equals. Treat each other with love and respect. As for love, that also grows like flowers.
Love needs to be watered with romantic evenings and private times.
In the beginning there is the romantic love of the engagement and marriage, then the special love when you become parents. There is love and respect as goals are reached whether it is a new home, a college degree, or a better job. How wonderful it is to have a companion to share these goals with and then to work towards new goals. Understanding and compassion are important. We marry for better or worse and there will always be something that is worse.