“Is it necessary to have an Orthodox beit din?” That depends on your purpose in obtaining the get. There are, indeed, “non-Orthodox” gitin (plural for get, and see below), but Orthodox authorities will accept a get as valid only if it is issued by an Orthodox beit din. To put this another way: the only sort of get that is recognized by all Jews is an Orthodox get. To have such a document might be useful, especially if you someday wish to marry an Orthodox Jew or if you wish to get married in Israel, where the laws of marriage and divorce for Jews are under the exclusive supervision of the Orthodox rabbinate. There are other, less pragmatic reasons that argue for an Orthodox get. The fact that so many non-Orthodox Jews have divorced and remarried without benefit of Jewish divorce decrees – to be more precise, without benefit of Orthodox divorce decrees – raises some sensitive and complex issues of ritual law. These divorcees and their children might encounter difficulties if they seek to marry Jews in many communities. If the cause of “Jewish unity” is important to you – and it should be important to all of us – this is something to think about.
It is sad to have to go through the pain of ending a marriage of longstanding. It is important to bear in mind that there is light at the end of the tunnel. Somehow, with G-d’s help, you will make it through.