When people hear the word relationship, most think of a romantic and/or sexual relationship, but it’s important to recognize that this represents a small fraction of the relationships that influence every character. In the context of this post, a relationship is any time that one character applies opinions or expectations onto another, whether the other person knows it or not.
One of the most basic forms of engagement is curiosity, what’s going to happen next? Surprises, judiciously used, can keep a story interesting, and prompt audiences to reconsider what they’ve previously read or thought. A surprise can either be a surprise for both audience & character(s), or a surprise for the audience alone.