Consider the TV series Master of None (Season 2) or the film Marriage Story . These narratives explore the banality of love: who does the dishes, who remembers the in-law's birthday, the silent resentment that builds over years. A romantic storyline that survives the third act is one where the characters choose each other not out of desperation, but out of deliberate, difficult, daily habit.
Chemistry isn't magic; it's a combination of push and pull.
uses science fiction to examine how a relationship survives extraordinary circumstances [5.1]. Growth & Vulnerability: