YOU SAID:
My girlfriend cheated me with her best girl friend
INTO JAPANESE
私のガールフレンドは彼女の最高のガールフレンドと私を騙しました
BACK INTO ENGLISH
My girlfriend cheated on me with her best girlfriend
INTO JAPANESE
私のガールフレンドは彼女の最高のガールフレンドと私を騙しました
BACK INTO ENGLISH
My girlfriend cheated on me with her best girlfriend
You should move to Japan!