One or both characters must change or sacrifice something to prove they are ready for the relationship.
This first encounter sets the tone. Is it a clash of personalities, a shared moment of vulnerability, or a bizarre coincidence?
Modern audiences tend to crave internal conflict. We want to see characters do the "inner work"—unlearning a toxic habit or choosing vulnerability over a defensive wall. The Arc: The Choice to Stay
The relationship should enhance their individual journeys, not replace them. The conflict shouldn't just be "will they end up together?" It should be "how does being together challenge who they are as people?"