On whose relationship was the popular poem Roman de la Rose based?

The poem "Roman de la Rose" isn't based on a specific, real-life relationship. It's a complex allegorical poem that uses the story of a young man's pursuit of a beautiful rose, known as "Beauty," to explore themes of love, desire, and the complexities of human nature.

The poem was written in two parts by two different authors:

* Guillaume de Lorris (c. 1225-1290) wrote the first part, which focuses on the young man's initial encounter with the rose and his romantic pursuit.

* Jean de Meun (c. 1240-1305) wrote the second part, which takes a more philosophical and satirical turn, exploring the nature of love, society, and the role of women.

While the poem's plot involves a romantic pursuit, the specific relationship between the young man and the rose is primarily allegorical. The characters and events are meant to symbolize broader concepts and ideas, rather than representing real individuals.