Can married woman live with unmarried man before file for divorce

Can married woman live with unmarried man before file for divorce Myself 28 yrs old man (Hindu) originally from punjab, currently settled in Uttar pradesh I am single and currently in a relation with a married woman who is from punjab . Due to various reason she is not happy with her husband and want to get separate. She has two girl child We want to get married by this January end (2007) however she haven’t yet discussed about separation/divorce with her legal husband as we are certain that he may get anger and things get more worst. So we have decided that she will take her child and leave her husband in august & come to Mumbai to stay with me. After that we will send him legal notice for divorce prior to our marriage. My queries are as follows – 1. Can we live together till she get divorced ? 2. Can we marry in a temple legally when her divorce petition is pending ? 3. Can her husband take any legal actions me and her wife if he comes to know about our live-in relation ? 4. Is it possible for us to take the custody of her girl child ? 5. Please explain the speediest way to get divorce.