Emotional Blackmailing & Forgery

The issue is with my ex colleague with whom I had a relationship for a very brief period unfortunately. Despite of the fact that she was already committed to another boy. She framed me and brainwashed me to fall into love with her. I never had the intention to fall for her because I knew that she was committed later. She told me how her boyfriend misbehave and emotionally torture her and convinced me that she wanted to leave him and move with me. She literally begged me to stay with her and because of her fake innocent attitude, I fell into the trap. She started to buy me gifts to which I protested but she continued to show her goodness and kindness to me and my parents. At one point she was behaving like she was a part of my family. During that period I took a loan of 36000 from her because I was going through a bad time. Later, things went physical between us for which she provoked me. But she still continued to be with her boyfriend and thus I refrained from staying further with her. Her boyfriend threatened me couple of times in between. I told her that I don't want to be in between two committed people because that's against my ethics and I was seriously fed up with her. Finally, all of a sudden she called me one day and she and her boyfriend started threatening me to repay 36000 plus 80000 for the expenses she made purchasing gifts for me despite of my objection. I paid her 36000 as per my commitment but both of them started charging me by saying that they'll sue me for Rape Case, Forgery Case and if required then beat me up by goons. I'm worried about my both of their intentions now. Please help!