In relationship with one boy and parents are not accepting

I am 25years old and am in relationship with one boy from past 7years and he is 28 years and he is working but not settled I told my parents that I wanna marry him but they are not accepting I used to work in software company but after telling this tho my parents they asked me to quit my job and now am I’m home from 2years boy parents accepted for marriage and they are willing to come to our house to talk but our parents are not allowing them. My parents are saying that he does not belong to our caste so they will not marry me with that boy whom am loving they are making emotional blackmail that they will die if ill marry the person whom I love Ian facing mental tourture nd beatings from my mom some times could u please help me to do something my father is short tempered and his voice is in high pitch he is using abbusive words on me that am unable to take and feeling like to run away from my house but they are not allowing me to do plz help me