1. To file for mutual consent divorce the spouses do not require marriage certificate. There has to be a positive agreement between spouses to file for it as it is a joint petition that has to be signed jointly by both spouses. Under Hindu Marriage Act a petition for dissolution of marriage cannot be filed unless a year has expired from the date of marriage. It takes 6 months for the process to culminate from the date of filing. This period can also be shortened by the Supreme Court.
2. Police cannot and it will not pull out the messages and call records between the wife and her love affair as having an affair prior to marriage is not an offence.