Maybe lets start from the beging.
A romance is a relationship between two people who are in love with each other but who are not married to each other. ... Romance refers to the actions and feelings of people who are in love, especially behaviour which is very caring or affectionate.
We do not have a romance or anything like that in EA BG3, call it buy its name, one night stand, hock up, casual sex.
I see no curting, no flirting, no interaction to initate a "romance"
Just a question do you want to bang? Yes? no? please fill check mark.