YOU SAID:
i cheated on my boyfriend with another girl
INTO JAPANESE
私は別の女の子と私のボーイフレンドをだましました
BACK INTO ENGLISH
I tricked another girl and my boyfriend
INTO JAPANESE
私は別の女の子と私のボーイフレンドをだましました
BACK INTO ENGLISH
I tricked another girl and my boyfriend
That didn't even make that much sense in English.