YOU SAID:
I have a crush on a close friend
INTO JAPANESE
私は親しい友人につぶやく
BACK INTO ENGLISH
I muttered to a close friend
INTO JAPANESE
私は親友につぶやいた
BACK INTO ENGLISH
I muttered to my best friend
INTO JAPANESE
私は私の親友につぶやいた
BACK INTO ENGLISH
I mumbled to my best friend
INTO JAPANESE
私は私の親友にぶつかった
BACK INTO ENGLISH
I bumped into my best friend
INTO JAPANESE
私は私の親友にぶつかりました
BACK INTO ENGLISH
I bumped into my best friend
That didn't even make that much sense in English.