YOU SAID:

I ain't never seen two pretty best friends. Always one of them gotta be ugly.

INTO JAPANESE

私は2人のかなりの親友を見たことがありません。常にそのうちの1つは醜い必要があります。

BACK INTO ENGLISH

I have never seen two pretty best friends. One of them should always be ugly.

INTO JAPANESE

私は2人のかなりの親友を見たことがありません。それらの1つは常に醜いはずです。

BACK INTO ENGLISH

I have never seen two pretty best friends. One of them should always be ugly.