Romantic storylines generally follow structured "arcs" that define how characters grow together:

Romance is maintained by keeping certain aspects of oneself unknown to the partner.

Relationship and romantic storylines often focus on the evolution of a bond through specific or themes , ranging from serendipitous beginnings to the enduring work of long-term partnership. Common Romantic Arcs and Themes

Psychological research suggests that people view their own relationships through specific "narratives" that shape their expectations:

Relationships strengthened by external challenges, like one partner supporting the other through a serious injury or long-term illness. The "25 Stories" Theory

The relationship is a journey the couple takes together. Practical "Rules" for Healthy Relationships

Relationships are seen as funny, strange, or wacky experiences.