About marriage

Hello everyone, this incident is done on 2015. i was loving a guy without knowing that he is a rogue.once i came to my native n that guy called me and started to cry that he needs to see me n meet me for just an hour n without seeing me he would die. so i went to meet him and after that he locked me in his house and threatened me to sign on register marriage form. if not he would not allowed me to return to my home. so i did. he even forced for sex by threatening so i agreed. while returning he said that all this plan is just for s..x. i was in eager to return home as i lied with my family that i went to my friends house. so i dint took any actions on him and was mentaly disturbed for some months and later recoverd and forgotten all those. but now almost after 1 nd half year, i got my marriage fixed with someone and now that guy is threatening me that our marriage is over and he'll show that form to everyone which i signed and even he has recorded that private video and threatening me to show that for everyone.. i never need such a bad guy again in my life. feeling so hopeless as i cannot tell with this with my family or with the boy whom im going to marry.. please help me