The recent news that actress Sofia Vergara is facing a lawsuit from her ex-fiancé over the fate of their frozen embryos is shining a light on the embryo freezing process. If a couple separates and fails to agree on what to do with their frozen embryos, a lengthy and emotionally taxing legal battle could ensue. However, if only eggs are frozen over the course of a relationship, and that relationship ends, there is no dispute over who the eggs belong to and who controls their fate.