Much has been written about character arcs, but little has been taught about relationship arcs--despite relationship plotlines playing key roles in most stories, in most genres. Writing instructors such as Blake Snyder and Robert McKee, and approaches such as Dramatica Theory, all touch on the importance of having a central relationship in a story.
But there aren't very many resources on how to actually write or arc the relationship itself--unless of course, you are writing in the romance genre (and if you are, definitely take advantage of those resources--a great one is Romancing the Beat by Gwen Hayes).
The central relationship in a story (which often involves the protagonist and the Influence Character) isn't always a romantic one though. It can be a relationship between allies, friends, coworkers, siblings, a mentor and student, or even rivals or enemies.
So while the romance resources can help you write a lot of stories, they won't work for all central relationship types, as you'll see by the end of this article.
Because, while it's most common for the central relationship characters to become close, it's not the only option. And some characters are already close when the story begins. How do we write about them? By undoing their past and re-doing it, like so many writers have done poorly in sequels?
Plus, your protagonist (and any other key characters) will likely have important relationships with others outside the central relationship (even if they aren't a major plotline)--few relationships stay stagnant, so how do we arc those? They can't all follow the same format!
These are concerns that have been on my mind over the years, particularly because multiple writing approaches emphasize the need for a relationship plotline for the B Story (secondary plotline), but then those same approaches tend to be awfully vague on how to actually do that.
Well, several weeks ago while I was doing my hair and thinking about the basic character arcs, something clicked with me on a level it hadn't before. And a bunch of these questions I've had about relationships started getting answers! Suddenly things that had felt vague and elusive (and, I admit to some degree, unimportant) started making complete sense.
The info is more than I can fit in a single article. But the best place to start, is with the four basic types of relationship arcs.
Which is great, because arcs build off concepts you probably already know . . .