Fraud marriage

I'm form Varanasi, In noida I'm working last 5 years. In 2014 I meet a person (now my husband), he was my colleague then we both are love to each other, and in 2017 june 2 we get married through arya samaz mandir because his family not accept me according to him, the region for not accept is my cast...So we decided after marriage aur some time latter may be his family accept me..but after one year later I was doubt to him for some issue..so I tried to find what are he lying me then my eyes is open..and the truth he is already married man and his already having son her age 8 year, this is a shock for me...I want divorce, can I take legally divorce. And 1 property we have but that on possession and I'm co partner in this property.. His first marriage through his own samaz at her home town there is no legal documents..as per official documents and except his family members all knows I'm his wife but what I took action for him..my family knows my married and I can't tell to my family that he is cheet with me..my family is waiting when his family accept me.