STEP 1: Speak French To Them
For some reason, Francis often found people were weak to his French accent, and often times just throwing in just a few words in French would turn a conversation into seduction - not that he was ever trying to do that. Francis believed in true love, not one night stands and flings, and he was beginning to think he'd found it.
Of course, he wasn't above using his skills that he knew where useful in seduction when it was for the sake of real love. Even the cold-hearted and sharp Arthur would be sure to melt if he used his French and his charms.
Or, so he'd thought.
"Get the bloody hell out of my house, you wanker! This is why I always say you French are the worst! Shallow flirts!"
Francis had forgotten that Arthur was a very British brit whose hobbies included cooking bland food and hating the French.
Maybe he'd have to try something else.
STEP 2: NO, WAIT, DON'T DO THAT FRANCIS-
When Francis started flirting seductively, - in French, no less-Arthur made quick work out of kicking him out, complete with several curses, but he couldn't even stay to relish Francis's crestfallen face, ducking back inside before the red from his burning ears spread to the rest of his face, throwing his hands to cover his burning face.
He hated French people, they were obnoxious, shallow and flirtatious and fuck their accents were so sexy! And Arthur did NOT like Francis, not one bit, but...
He could still feel Francis's warm breath on his ear and hear the echoes of the the elegant language he'd barely understood well enough to know what Francis was saying. But he had understood and God he hated himself for his own reaction.
Arthur both anticipated and fears the next time he spoke to Francis, because Francis would surely speak French again, and Arthur wasn't sure he could handle it.
Francis, feeling rather downcast, made a mental note not to speak French to Arthur again.
