YOU SAID:

mom i can't believe you cheated on me with her!!!!!

INTO JAPANESE

お母さん、私はあなたが彼女と私をだましていたとは信じられない!!!!!

BACK INTO ENGLISH

Mom, I can't believe you cheated me with her !!!!!

INTO JAPANESE

お母さん、あなたが彼女と私をだましたとは信じられない!!!!!

BACK INTO ENGLISH

Mom, I can't believe you cheated me with her !!!!!