YOU SAID:
i don't know why i'm so handsome
INTO JAPANESE
私はなぜハンサムなのか分かりません
BACK INTO ENGLISH
I don't know why I'm handsome
INTO JAPANESE
なぜハンサムなのかわからない
BACK INTO ENGLISH
I don't know why you are handsome
INTO JAPANESE
あなたがハンサムな理由がわかりません
BACK INTO ENGLISH
I don't know why you are handsome
Come on, you can do better than that.