YOU SAID:

Watermelons are my only wives I know aren't cheating.

INTO JAPANESE

スイカは私が知っている私だけの妻が浮気ではないです。

BACK INTO ENGLISH

Watermelon is only that I know my wife is cheating is not.

INTO JAPANESE

スイカだけは私が知っている私の妻は浮気ではないです。

BACK INTO ENGLISH

Only watermelon I know my wife is unfaithful is not.

INTO JAPANESE

私は私の妻は忠実な知っている唯一のスイカではありません。

BACK INTO ENGLISH

I my wife isn't faithful know only watermelons.

INTO JAPANESE

私の妻はない忠実なスイカだけを知っています。

BACK INTO ENGLISH

My wife knows that no loyal watermelon.

INTO JAPANESE

私の妻はそれを知っているない忠実なスイカ。

BACK INTO ENGLISH

My wife's not loyal watermelon knows it.

INTO JAPANESE

私の妻の忠実ではないスイカがそれを知っています。

BACK INTO ENGLISH

Watermelon is not true my wife knows it.

INTO JAPANESE

スイカは私の妻はそれを知っているは本当ではないです。

BACK INTO ENGLISH

Watermelon is my wife know it really is not.

INTO JAPANESE

スイカは私の妻は、それは本当にはない知っています。

BACK INTO ENGLISH

Watermelon is my wife, it really does not know.

INTO JAPANESE

スイカは、私の妻は、本当に知らない。

BACK INTO ENGLISH

Watermelon is my wife, don't really know.

INTO JAPANESE

スイカは私の妻は、本当にわからない。

BACK INTO ENGLISH

Watermelon is my wife, don't really know.