In "The Divide" by Nicholas Evans, the author emphasizes the importance of prioritizing your relationship as a couple, even after having children. It’s natural for parents to focus on their kids, but neglecting the marriage can lead to potential issues in the long run. The quote highlights the necessity of nurturing the partnership to ensure it remains strong and vibrant.

The analogy of marriage being like a plant illustrates the ongoing effort required to maintain a healthy relationship. Just as plants need regular water and care, couples must invest time and affection in each other. Failure to do so may result in a relationship that diminishes once the children grow up and leave home.