Parents are forcing boy to marry a girl how can we marry legally

I m a Hindu girl. I m in love with a Muslim boy. V r 2gether since last 3years & v both r trying 2convince our parents since then. But they are not agreeing to accept our relationship at any conditions due to difference in our religion & customs. His parents are forcing him to marry a Muslim girl against his will. He loves me and wants to spend a peaceful happy life with me. But no body is supporting us situation has become worse now I don't want to lose my love he is my life I know & I have seen him & realised this fact even he cannot live without me. Please help & guide us in this regards.