YOU SAID:
I know youre talking about me.
INTO JAPANESE
私はあなたが私について話しているのを知っています。
BACK INTO ENGLISH
I know that you are talking about me.
INTO JAPANESE
私はあなたが私について話していることを知っています。
BACK INTO ENGLISH
I know that you are talking about me.
That didn't even make that much sense in English.