YOU SAID:

If I would prefer him to you, then that's bad news for you.

INTO JAPANESE

私があなたに彼を好むなら、それはあなたにとって悪い知らせです。

BACK INTO ENGLISH

If I like him for you, that is bad news for you.

INTO JAPANESE

私があなたにとって彼が好きなら、それはあなたにとって悪い知らせです。

BACK INTO ENGLISH

If I like him for you, that is bad news for you.