Sexual harrasment

I'm a student & preparing for civil services. When I was staying in a PG in Jaipur for preparation, I met a boy living on rent in the same colony, who was pursuing nursing. At the time when I met that boy, I was emotionally very weak, bcoz a few days ago, a boy who was preparing with me, took me into confidence & called me to him on the pretext of clearing doubts and forced himself on me and I could not tell this to anyone & bcoz of this I was very emotionally upset & this thing was becoming like a trauma. Then I met this boy and he very quickly took me into confidence with his behavior & also helped me a lot in getting out of that state of mind at that time. Bcoz of this, I started trusting him a lot & emotionally I became very dependent on him & in a way we became very close friends. I started visiting his room with my roommate as well. Slowly he started taking advantage of my trust. One day he tried to force himself on me at his room. That day I could not tell anything to anyone. Later he apologized & said that it all happened by mistake & it will not happen again. Due to emotional dependency I forgave him at that time. Then one day making an excuse of being unwell he said that he needs help, so without thinking anything I went to him. But he was not unwell & that day he sexually assaulted me and forced me to be physical but somehow I escaped from there. After that he tried to sexually harass me 4-5 times at different places. But due to my emotional dependency, I could not raise my voice against him. But deep inside I was very upset and my health also started deteriorating. So I decided to come home permanently so that my emotional dependency on him could be reduced. After coming home, he started making inappropriate demands from me on video calls. I was very upset by all this & slowly all this started spoiling my mental health as well. Finally, I got upset with his demands & called his mother & told them everything. & I told that boy, that I am going to file an FIR now. On talking about the FIR, his sister threatened me that the boy will commit suicide. So I could not muster courage at that time to file an FIR. I was afraid that he might take such a step. So I thought that I could talk to that boy once and convince him not to take such a step & I backed out from filing the FIR. After a few days, I tried to talk to him, instead of talking to him himself, he made his roommate talk to me & his roommate said that do not disturb him otherwise he will commit suicide, then where will you go to save yourself. By threatening suicide like this, they want me to keep quiet and not take any action against him. It has been almost 5-6 months since all these things have been going on & it's affecting my physical - mental health.There is also a fear that if the person who threatened suicide, takes such a step for some other reason in future and makes me the reason for this step, then everything will be over for me. Should I file an FIR or not & what effec