Fake Promise of marriage

Hello sir/Madam I was in IIM Ranchi in the batch 2018-20. I had taken admission on 26th June. On my birthday 27th July 2018, A guy asked me for movie as we had classes from 7 in the morning to 8 in the night. We had a bit of conversation and in between I said my birthday was wasted. I refused him but he kept on insisting. After a good 13-14 days, I went to a movie with him. Since he had touched my shoulders without my consent, I started ignoring him. But somehow he tried to get into my good books. I told him, I wont get into relationship as I can't bear heartbreak. I have to marry. He promised me that he would never leave me. He made me talk with his mom. When he kissed me then also I asked him will he marry me. Then he said, once we complete college and get a job then we will settle down. But in three months, all this became shattering when I got to know he was already talking with another girl when he was not with me. He again convinced me that the girl is just her friend as I did not know Gujrati then. After that, he took me to his home and there he forced me for oral sex. I kept on asking him, will he leave me? He always said, he will marry me. All of a sudden I got to know his parents are fixing an alliance for him and he has also messaged that girl. I got furious and asked him if he really wants to get married or if should I file a complaint. Then he again assured me thrice and had sex with me but now he is totally refusing. I have all the conversations in proof but now that it's been a month since I met him, I do not have medical proof.