In order to obtain a no-fault divorce in only Tennessee, Mississippi, and South Dakota, the parties must mutually consent to provide information regarding incompatibility or why the marriage partners have changed, grown apart, or have irreconcilable differences. Otherwise, in the rest of the country, only one party has to file for irreconcilable differences, and any excuse will do. If a state requires a separation period, either or both spouses may be required to bring a witness to testify that the parties have been living apart for the required amount of time.