• GF is not ready to break up

Hi,
I am 25 years old guy, last year I met my gf, we started having s%x after one week of knowing each other as interest was from both side. I cleared at the starting that I can't marry her. She was ok with it at the starting, but slowly slowly I felt she was trying to put me in a condition where I 'll have no point of return than marrying her. So I used to tell her not to keep any attachment.By the way she used to give me suicidal threat all the time from the starting that her ex spoiled her life she don't want to live. Later one day (after 3/4 months after meeting her), I told her I'm gonna break up. She started crying and pleaded to be with her till she get a good job as she wanted to earn more, I was fool started helping her thinking she 'll leave me once her career is settled. Well one day finally she got a good offer. After she got offer I was little bit attached to her. One day I told her, "How long will it work like this, we need to think". I was pointing to break up but she thought I was talking about marrying her, later I clarified that it is not what she is thinking. But she was not ready to listen to me.  Hence argument started, I was trying to break up badly. She was forcing me to stay another 3-4 months. As I was badly seeking for break up, I talked to her elder sister to ask what I can do at this moment, she told to change the current address and change the ph no, so I did that as this seemed to me a feasible solution. Then she went to police station when she saw I'm not ready for compromise at that situation, the reason she went to police station is to track my no to see where I am staying currently. Police sent her back saying that can not be done. Later again she went to police and said that I gave her hope to marry now I left and she took police to my office and to take me to police station. I was really scared thinking that she might had done or tried committing suicide. Then after going to police station I told everything to the officer and finally I was able to made them understand, they didn't take FIR or complaint. But next day the police officer called me up and started scaring that she 'll put rape charge and all , I have to give him 20k then he 'll introduce me to his lawyer to get anticipatory bail(I was really shocked why he wants me to take bail as there is no question of even sexual harassment ) . Still I told I 'll give the money but it will take time. That when I came office I got to know my office ID was deactivated as police came to the office , its a question of company's reputation. I need to get clearance certificate from police station. I was not able to find a way how to tackle the situation and decided better to patch up with her and I 'll ask her to help me to get the clearance certificate. She did. Even after lot of argument with police, they were not ready to give me clearance, finally she told she will withdraw the NC she had lodged, she withdrew the NC. Well, after that my office was ready to take me back after verifying the copy of the withdrawal request. 
I didn't know that was my biggest mistake patching up with her again. Its been 3 months since all this police saga happened. Now a days , she is doing everything forcefully, she is coming to my house without permission, she is forcefully having s$x. I am trying to find a proper way to get  out of this relation, hence thought of posting here. As per our last discussion we decided any one of us  will go away from here(I'm badly waiting for the day). But I don't have any belief on her at this point . If I dont want to have sex, either she is fighting with me or sometimes scaring me that she wont leave me so easily.
I really don't know what should be my correct step to get rid of her. Staying with her(NOT live in), seems like staying with a time bomb, I don't know when it will burst out.
As an IT professional, I dont want to get into any legal trouble as that can be end of my career.

Could anyone please guide me on how to tackle this situation, can;t really sleep thinking of all these.