Cheating in the name of love and Marriage

Details Hi Sir/Ma'am, I was in a relationship with a guy for 3 years. He is 2 and half years younger than me. I am almost 30 now. He was the one who kept insisting me to love and initiated the relationship to marriage. I had multiple times mentioned him that we had age difference and didn't accept this relationship to marriage. He consistently kept claiming that he loved me so much and wanted to marry me. Both our families knew about our relationship in the last year and we had spoken about marriage to both our parents. We have been close to each other's families for all the 3 years. In the last year, I rented a house and moved out of my family for work and other purposes. He used to stay with me very often. When both the families were about to meet and fix the marriage date, I have been having small fights with him for past 3 to 4 months. His behaviours didn't seem normal to me. He started taking advantage of me, I had often been in mental stress and emotional stress because of that and it affected my work alot. At some point, I told him that this wan't working and we need to part our ways. But he didn't let me go, he insisted multiple times on me staying in this relationship, fixing this and taking this to marriage. He made me trust him so much and never let me walk out. At one point, when our parents were about to meet to fix our marriage date, one morning- I found out that he has been flirting, chatting and sexting another woman online. It shattered me. I told him, this is over and he walked out of my house. After that he did not ever try to come back or answer me or fix me. I found out alot of things about him. He has been seeing this girl online meeting her in person, being physical, flirting and sexting in Instagram for more than a year while all along being in an intimate and serious relationship with me. This has exploited my physical and mental state. I started finding a lot of things. After he left me, he straight away went, met another girl and tried to be physical with her too. All these things put me into a lot of mental and emotional stress. He never showed himself as a guy like this to me. He has been secretly maintaining things out of our relationship for his pleasure and thrills, and also holding me up for marriage all along. He used me as a marriage material. He never wanted to break up with me even when I wanted to. But once I caught him, he abandoned me and ran away. I took alot of efforts to reach him. make him face me and confront him. He kept dodging from me. He has spoiled 3 years of my life in the name of love and marriage. He has used me emotionally, physically and mentally. And after all this he just walked out like nothing happened. I wanted a financial compensation for the loss and distress he has caused me in all ways. I spoke to him and his family. They constantly neglected me and behaved like we never knew each other. I want to file this as a complaint. I want justice for myself and the calculated cheating he did to me. I am earning more than him, im in a position at job better than him and he knew my character well, so he wanted to trap me for marriage playing the good guy infront of mr, gaining my trust and slowly and steadily making me fall in love with him. He has all along been a cheater. I want a justice for myself- for the 3 years he wasted from my life by cheating me, by creating mental, emotional abuse and psychological abuse to me. What complaint can I file for my case, and what are the relevant sections?