YOU SAID:

You may not believe it but his friends daughter is my aunt eventhough we never met.

INTO JAPANESE

信じられないかもしれませんが、会ったことはありませんが、彼の友達の娘は私の叔母です。

BACK INTO ENGLISH

Believe it or not, I've never met him, but his friend's daughter is my aunt.

INTO JAPANESE

信じられないかもしれませんが、私は彼に会ったことがありませんが、彼の友人の娘は私の叔母です。

BACK INTO ENGLISH

Believe it or not, I've never met him, but his friend's daughter is my aunt.