After my marriage to a boy I came to know that he is already married to a girl two years before my marriage. In my country, marriage is a big deal a girl's life. I haven't made any decisions regarding what I'll do as I am already married him. Please give me a better solution.
I assume that the young man you married did not divorce his first wife. If that is correct, then he is committing adultery by marrying a second wife. Your marriage as far as God is concern is not valid. In most countries bigamy is not allowed, so even the secular laws would declare your marriage to be invalid. The only solution is to end this improper marriage.