Tropes provide a familiar framework that you can put your own unique spin on:

: Characters pretend to be a couple for a specific reason, only to catch real feelings.

: A plot point, often around the 25% mark, that "locks" the characters together, forcing them to interact despite their conflicts.

: Obstacles must keep the characters apart. This can be internal (fear of commitment, past trauma) or external (family feuds, rival jobs, or physical distance).

: The memorable first meeting that establishes the "sparks" or initial friction between characters.

: High-energy bickering that masks deep attraction.