YOU SAID:
You are the prettiest girl I've ever met
INTO JAPANESE
あなたは私が今まで会った中で最も美しい女の子です
BACK INTO ENGLISH
you are the most beautiful girl i have ever met
INTO JAPANESE
あなたは私が今まで会った中で最も美しい女の子です
BACK INTO ENGLISH
you are the most beautiful girl i have ever met
That didn't even make that much sense in English.