On behalf of Stange Law Firm, PC posted in Legal Separation on Wednesday, June 6, 2012. In Missouri, there are no official separation requirements before a couple files for divorce. However, it is quite common for many couples to separate in order to give themselves time to figure out exactly what they want to do: Either try once more to stay together or file for divorce. Statistically, when a couple does separate, it greatly increases their chances of getting divorced. One recent study even found that roughly 79 percent of couples who separate later go on to file for divorce.