In Nora Ephron's book "Heartburn," the complexities of love and marriage are explored, particularly highlighting how initial attraction often stems from differences between partners. These differences, which initially add excitement to the relationship, can later become sources of frustration once the reality of marriage sets in.

This dynamic illustrates the challenge many couples face: what once made them fall in love can evolve into a source of conflict. Ephron captures how love can transform, revealing that while differences can be enchanting, they can also test a relationship's foundations over time.