YOU SAID:

I do not want you to tell about of it.

INTO JAPANESE

私はあなたにそれについて伝えてほしくない。

BACK INTO ENGLISH

I do not want you to tell me about it.

INTO JAPANESE

私にあなたがそれについて私に話してほしくない。

BACK INTO ENGLISH

I do not want you to tell me about it.