As a French speaker, I stg your genders for LE sun and LA moon don’t make a lick of sense, and sound really wrong.
DER Sonne is obviously a guy. Goes to the gym every day, lifts weights, big muscles, maybe a bandana. Picture a ladies’ man from 1985 in a beach town, and that’s him. And DIE Mund is the protectress of women.

Social conditioning, once again. We’re French, and it’s totally possible for us.
Yesterday, among strangers, at the local lake, my 42 year old friend was topless, playing with her 7 year old son and her 5 year old (naked) step-daughter. A 36 yo pregnant friend was wearing a string bikini around her husband, 6 yo daughter, and in-laws. It was a non-issue.
Not saying all rules can always be broken, but they’re heavily context- and culture-dependant.