The moment the obstacle vanishes without a fight, the storyline dies. That’s why so many romantic comedies falter in the third act. The "grand gesture" feels hollow if we haven’t watched the characters grow enough to earn it.
Consider the most iconic pairings in fiction:
Leo laughed, and the sound broke the tension, but in a good way—like a dam breaking to let the river flow. He leaned in, and the kiss was soft, tentative, and tasting of tomato sauce and rain. It wasn't the end of the movie. It wasn't even the end of the scene. It was just the moment the credits started to roll, signaling that the real story was finally beginning.
: Avoid predictable tropes like the "petty third-act breakup" in favor of realistic tension where couples face problems together. Popular Romantic Plot Archetypes