It’s a difficult one… I know (& you know from past posts) that with dopamine, the thrill is in the chase. This probably goes for all humans. So it’s “objective” & is ”natural”.
But, more subjectively, I have found that usually, when I know the feeling is reciprocated, it intensifies. So is “subjective”, probably falling under “cultural” influence.
So will attraction, should you go by what your body tells you, due to dopamine release, or what cultural tells you, when you’re more inclined when you think the feeling is mutual.