After you file divorce papers and a judge has granted you and your spouse a divorce order, you become legally divorced. Divorce orders are final and cannot be reversed.
Once you're divorced, you're legally allowed to remarry. If you and your ex-spouse wanted to get back together after a divorce, you would have to get married again and enter a new union.
Depending on your circumstances, you and your spouse may still have to interact after your divorce. Spouses who share children or pets usually have to work together to effectively take care of their dependents. In this case, it's best to create records of your agreements and schedules to minimize disagreements about your arrangement.