first cousin marriage

Hi, myself n my mother's brother's daughter want to get married. We both were brought up in a Christian marthomite family. Out families are against our love n wants us to get separated. But we can't do that. I have read tht first cousins marriages are prohibited legally. Is there by any chance v can be together under law so that v as well as our children be safe. We really need to be legally secured because oru child may not suffer for our action. Please reply..