Forceful marriage - using sexual relationship as a leverage and blackmailing me

2 years ago

I was in a relationship with a guy since 2 years. we made it official in our families just 7 months after we knew each other. After getting into relationship, I got to know how short tempered and abusive he is. He even hit me in public thrice. I'm a single child and lost my father 6 years ago. Being semi orphan, i wanted love and affection, but got none. I waited so much that he would change but I'm done. Just when i decided to leave this relationship, my mother who is 60 years old, started blackmailing me that she would commit suicide or leave home if i dont marry him. She is concerned about what society thinks because it's official in our family. she is not concerned about my life even after saying everything about him, showing his messages and telling her i would commit suicide. I even cut my hand to show her how much i wanted to leave him. Now this person is using sex as a leverage to get me. He said my mom that we had sexual relationship and has enough proofs like photos which he will make it public if i dont marry him and my mom is scared and stubborn that I have to marry him at any cost. She hit me, scratched me because i said no. I can't marry and live with such person whose character i already know before marriage. I'm 24, i work and I have right to decide whom to marry and when to marry. I have no idea what to do with my mother. I tried explaining everything to her but it's of no use. She is planning for an engagement this february and I dont want it. I'm scared to file a police complaint because that would bring my sexual relationship into the society and would make a mess and would make my mom commit suicide for real. Please any ideas or thoughts are encouraged.