YOU SAID:
I had an ex and they cheated on me
INTO JAPANESE
私には元恋人がいて、彼らは私をだましました
BACK INTO ENGLISH
I have ex-lovers and they cheated on me
INTO JAPANESE
私には元恋人がいて、彼らは私をだましました
BACK INTO ENGLISH
I have ex-lovers and they cheated on me
That didn't even make that much sense in English.