From the outside - an Orthodox Jew, from the inside - a Kofer
כִּי לֹא מַחְשְׁבוֹתַי מַחְשְׁבוֹתֵיכֶם, וְלֹא דַרְכֵיכֶם דְּרָכָי
It's called Diary Of An OTD Girl. Highly recommended!