YOU SAID:
seriously i don't believe you
INTO JAPANESE
真剣に私はあなたを信じない
BACK INTO ENGLISH
Seriously i don't believe you
INTO JAPANESE
真剣にあなたを信じない
BACK INTO ENGLISH
Do not believe in you seriously
INTO JAPANESE
あなたを真剣に信じないでください
BACK INTO ENGLISH
Do not believe in you seriously
That didn't even make that much sense in English.