YOU SAID:
i cant believe he didnt follow me back
INTO JAPANESE
彼が私をフォローバックしなかったことが信じられない
BACK INTO ENGLISH
I can't believe he didn't follow me back
INTO JAPANESE
彼が私をフォローバックしなかったことが信じられない
BACK INTO ENGLISH
I can't believe he didn't follow me back
That didn't even make that much sense in English.