IPC 375, promise of marriage becomes rape.

I m a doctor in Varanasi, Uttar Pradesh. I was friend with a girl who used to work in the same hospital. Everything was fine and we were happy together. One day I got information that the Girl is already married in 2012. After confirmation of this news, I asked the Girl and her family why they were cheating with me. Initially they denied about marriage but later accepted the fact and started threatening that either I marry that already married girl or they will file a criminal case against me. Since it is both illegal and immoral to marry an already married girl, I denied. The Girl hv filed a false complaint of section 376 against me. I got arrest stay from supreme court till investigation was pending . The Girl was meeting and influencing the local authorities to file a Fabricated chargesheet against me so that I am sent behind bars for no crime of mine.  She had filed nomination for UP assembly elections for MLA from the same area in which police station she had lodged the FIR to influence the authorities. On further enquiry on personal level , it was revealed that the Girl had filed similar complaints earlier against two other guys also and withdrawn the case after some mutual settlements, the nature of which in unknown to me, niether any police record are available for these. Police has submitted chargesheet without investigating any facts. Police did not include the documents given by me in its case diary. And District court has issued NBW against me. How to proceed further?