YOU SAID:

I once told a guy that I died.

INTO JAPANESE

私はかつて私が死んだことを男に話しました。

BACK INTO ENGLISH

I told the man once I was dead.

INTO JAPANESE

私が死んだら、私はその男に言った。

BACK INTO ENGLISH

When I died, I said to the man.

INTO JAPANESE

私が死んだとき、私はその男に言った。

BACK INTO ENGLISH

When I died, I said to the man.