AU prompt, either outright medieval, or the wizarding world retains more from the old times. There are much stronger differences in culture between Houses of Hogwarts, with Gryffindor putting much more emphasis on chivalry. Enter Harry Potter who takes ¨to chivalric virtues like a fish to water.
Meet Fleur Delacour, a champion of the French academy, beautiful, smart, graceful, cunning and with a hidden sensual side. Harry becomes enchanted by this vision of loveliness (Blanchefleur) and starts courting this lady. Fleur is honestly quite flattered by the young, handsome, honourable, humble and valiant knight. She enjoys seeing him fighting in duels and tournaments, carrying her favour. He even learned the lute and the lyre, his verses may be somewhat clumsy, yet they are heartfelt. Yet Fleur grows increasingly frustrated by this young sir’s chastity. So she starts her own game of temptation and seduction. Young Sir Harry insists on a proper chivalric romance and is somewhat confused by his Lady’s gestures.
sUntil, finally, dear Fleur just snaps, drags the young knight to her own tent and gives him a right proper, earth-shaking, sky-shattering, sarding.