YOU SAID:
he cheated on me so i broke his ipone
INTO JAPANESE
彼が私をだましたので、私は彼のiPhoneを壊しました
BACK INTO ENGLISH
I broke his iPhone because he cheated on me
INTO JAPANESE
彼が浮気したのでiPhoneを壊してしまいました
BACK INTO ENGLISH
I broke my iPhone because he cheated on me
INTO JAPANESE
彼が浮気したのでiPhoneを壊してしまいました
BACK INTO ENGLISH
I broke my iPhone because he cheated on me
Come on, you can do better than that.