@AverageDog id start with "fiction" and follow your plot from there, real people in healthy love have compelling lives and stories outside of their romantic relationships, regardless of how important those relationships are

Edit to add, for clarity: i say "follow your plot" as in "let it lead you to your genre label", not to diminish or belittle your question 🫶 hope im making myself clear, my desire is to help but i have a very autistic way of saying things that land sideways, regardless of that intent