YOU SAID:

I aint ever seen two pretty best friends, its always one of them gotta be ugly

INTO JAPANESE

私は2人のかなり親友を見たことがありません、その常に1人は醜い必要があります

BACK INTO ENGLISH

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

INTO JAPANESE

私は2人のかなり親友を見たことがありません。そのうちの1人はいつも醜いはずです

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