YOU SAID:
why can't we be friends?
INTO JAPANESE
なぜ友達をすることはできませんか。
BACK INTO ENGLISH
Why can't my friend?
INTO JAPANESE
私の友人がなぜか
BACK INTO ENGLISH
My friend why?
INTO JAPANESE
私の友人なぜですか?
BACK INTO ENGLISH
My friend why?
That didn't even make that much sense in English.