YOU SAID:

I ain't ever seen two pretty best friends, it's always gotta be one of them ugly

INTO JAPANESE

私は2人のかなり親友を見たことがありません、それは常に彼らの1人である必要があります醜い

BACK INTO ENGLISH

I've never seen two pretty best friends, it should always be one of them ugly

INTO JAPANESE

私は2人のかなり親友を見たことがありません、それは常に彼らの1人が醜いはずです

BACK INTO ENGLISH

I've never seen two pretty best friends, it should always be one of them ugly