YOU SAID:
Butterflies and rainbows will always be my best friends forever.
INTO JAPANESE
蝶と虹はいつまでも私の親友になるでしょう。
BACK INTO ENGLISH
Butterflies and rainbows will be my best friends forever.
INTO JAPANESE
蝶と虹は永遠に私の親友になるでしょう。
BACK INTO ENGLISH
Butterflies and rainbows will be my best friends forever.
That didn't even make that much sense in English.