YOU SAID:
i wish i could die hehe
INTO JAPANESE
私は彼が死ぬことができればいいのに
BACK INTO ENGLISH
I wish he could die.
INTO JAPANESE
彼が死んでいればいいのに。
BACK INTO ENGLISH
I wish he was dead.
INTO JAPANESE
彼はしたと思う
BACK INTO ENGLISH
I wish he was.
INTO JAPANESE
彼はしたと思う
BACK INTO ENGLISH
I wish he was.
That didn't even make that much sense in English.