Woman Lives in wit me in the nature of marriage

I and my fiancee were in a live-in relationship, in the nature of marriage for one year where we stayed as a married couple. We also had all sorts of physical relationships as there was the promise of marriage. I can prove everything. Both of our families agreed as we were suitable for each other. Just one month before the marriage, suddenly they denied marriage without any reason. What can I do? Can I claim restitution of the relationship? Is this a breach of promise of marriage/ trust? Is this law valid for me? "Section 494 of the I.P.C be suitably amended to the effect that if the man and woman were living together as husband and wife for a reasonable long period the man shall be deemed to have married the woman according to the customary rites of either party."