We fall in love with characters who change. We remember the kiss that happens after the character realizes they were wrong about themselves. Romeo dies for Juliet, but only after killing Tybalt—costume changes, not just feelings.

Modern storytelling has moved away from the boombox-outside-the-window clichés. Today’s audiences often prefer the "quiet realization"—a moment where one character shows they truly see the other in a way no one else does.

If you removed all dialogue tags and action descriptions, would you still know which character is speaking? If both sound like a generic romance novelist, the authenticity fails.