Treat the relationship itself as having a beginning, middle, and end, independent of the individual character arcs.
"Unwrapping the Flavors of Mexico: A Journey Through Tamales" www tamelsex
Love must be transformative. In a static storyline, characters remain the same; they just find a partner. In a great one, the relationship is the crucible that forces characters to grow. The cynical skeptic learns to trust. The reckless adventurer learns stability. Treat the relationship itself as having a beginning,
"Take as long as you need," Clara replied. "It’s not just about the music. It’s the memory." characters remain the same