How to Know When You've Found a Great Partner

The speaker discusses the idea that a person's true character is often revealed only when a relationship ends, as the incentive to maintain a "front" disappears. While partners may appear charming or accomplished during a relationship, the end of the relationship can expose underlying immaturity, lack of emotion, or, conversely, surprising decency and kindness. The speaker suggests that how someone behaves when they no longer have anything to gain from another person is the true measure of their character, leading to the idea of marrying someone based on how one would wish to be divorced from them.