It is a long standing belief that when you divorce, your spouse gets one-half of everything. For that reason, many people enter into marital contracts to protect themselves. Marital contracts, prenuptial agreements, are agreements made between couples before they marry concerning the ownership of each parties' respective assets should the marriage not succeed. Prenuptial agreements, prenups for short, have been around for thousands of years. Some sources say that prenups date all the way back to ancient Egypt.