YOU SAID:

I aint never seen two pretty bestfriends.

INTO JAPANESE

私は2人のかなり親友を見たことがない。

BACK INTO ENGLISH

I've never seen two pretty best friends.

INTO JAPANESE

私は2人のかなりの親友を見たことがありません。

BACK INTO ENGLISH

I have never seen two pretty best friends.

INTO JAPANESE

私は2人のかなりの親友を見たことがありません。

BACK INTO ENGLISH

I have never seen two pretty best friends.