My gf cheat me.

Hello. I am 26 years old and was in relationship of 4 years with a girl who ditched me for other guy. We never had consensual relationship so there fore she can not charge harrassment or molestation case against me for which I have all the proofs like phone recordings, messages and others. The used to stay at my place even for consecutive 15 days for which I have all the proofs and details. I spent lacs on her but in return she ditched me. The girl and the guy tried to Trapp me and gave me many theatening warnings. Initially she gave me commitments and she usually met with my parents and family and behaved like a daughter in law. Even after that I tried many times to solve the issue and to start a new life again. But every time she refused. With broken heart, my current feelings is to take action against her. As if she can do this to me then she can do the same with many guys. As a guy, I know Indian constitution has same legal rights like a girl have. Please guide me under what section I can take action against which proove her wrong and she would not repeat such shameless cheats again.