YOU SAID:

i have never seen two pretty best friends, there is always one of them that has got to be ugly

INTO JAPANESE

私は2人のかわいい親友を見たことがない、醜いものでなければならないそれらの1つが常にあります

BACK INTO ENGLISH

I've never seen two cute best friends, there's always one of them that must be ugly

INTO JAPANESE

私は2人のかわいい親友を見たことがない、醜いに違いないそれらの1つが常にあります

BACK INTO ENGLISH

I've never seen two cute best friends, there's always one of them that must be ugly