YOU SAID:

I was killed bye my wife’s girlfriend and her husband

INTO JAPANESE

私は妻のガールフレンドと彼女の夫にさようなら殺されました

BACK INTO ENGLISH

I was killed by my wife's girlfriend and her husband

INTO JAPANESE

私は妻のガールフレンドと彼女の夫に殺されました

BACK INTO ENGLISH

I was killed by my wife's girlfriend and her husband