Bigamy

My name is laxmi...i got married to a man in 2010 and got divorced in 2012..meantime my x husband friend who is also married started showing concern on me..helped me about the issues i have and meanwhile we got physical and got attached a lot. he said he can marry me and later can convince his first wife and parents if i give birth to a son as they are no sons in their family. With gods blessing he married me in temple in front of my parents and brother and pandit has performed the marriage...after marriage he took me to abroad and i was their with him for 1.6 years and we have a baby boy who is 1.5 years now...and his existing family was in india for that persiod..now they are back to abroad and his wife knows about me and started creating issues and he stopped coming to us and for that i used to fight with him.and we had lot of disputes and gap between us. now im back to india...now what can i do if want to continue relation...or leave him Can u advise me if i leave him...can i file a case against him? after knowing he is married i married him becoz i belive his words that he will convince all and give me a family from his end.in such case can i file a case against him? we have a baby boy of an year now...he stopped being in contact with me...so can i file a case against him stating that he left his family in india for 1.6 years and told me that he has permenanetly left them so i married?? plz help me im in confusion state...