Of course, no one likes to think about the possibility of divorce while in the blissful first stages of a romance. However, Prenuptial Agreements can be a particularly useful tool for high-net-worth individuals, small-business owners and those entering a second marriage, particularly if they have children from the first one.

One of the most expensive celebrity divorces ever was the split between Steven Spielberg and Amy Irving. The couple actually had a prenuptial agreement, however, it was written on a napkin, without the presence of an attorney. The judge threw it out, and awarded Ms. Irving approximately $100 million dollars, representing half of her ex-husband’s earnings.

The lesson here: make sure you both seek legal counsel for prenuptial advice, and that you write it on real paper!