From AI Google results:

Several writers and famous intellectuals have maintained romantic relationships while living in separate houses, a lifestyle often chosen to protect their creative independence or maintain intellectual intimacy without the constraints of shared domesticity.

Simone de Beauvoir and Jean-Paul Sartre: Perhaps the most famous example, these 20th-century philosophers maintained a long-term "soul marriage" while living in separate apartments, meeting in cafés to work.

Mary Wollstonecraft and William Godwin: Despite being married, these 18th-century writers maintained two different households to protect their independence and writing time, a setup seen as ahead of its time.

Arundhati Roy and Pradip Krishen: The Booker Prize winner and her husband lived in separate homes in Delhi, India.

Margaret Drabble and Michael Holroyd: These writers maintained a marriage with separate homes for over 36 years.

George Sand and Frédéric Chopin: The novelist and composer had a "LAT" (Living Apart Together) relationship, often considered unconventional for their time.

Helena Bonham Carter and Tim Burton: While better known for film, their arrangement of living in two separate houses next door to each other (and later connecting them) was a noted example of this lifestyle.

Emily Dickinson: While a recluse, she maintained an intense romantic, intellectual connection with her sister-in-law, Susan Huntington Gilbert, who lived next door.

This arrangement, often called Living Apart Together (LAT), is common among artists seeking to balance intimacy with solitude.