: A long-term phase built on deep trust and shared history. Essential Storytelling Elements

: Defining protagonists by their personal goals and flaws, ensuring they remain interesting outside of their romantic interests.

: Simple acts like exchanging love letters can strengthen emotional bonds.

: Lasting from 6 months to 2 years, this is characterized by intense passion and "new relationship energy".

: A shift toward stability and comfort, usually occurring between 1 and 5 years.