Samantha begins to wonder if Darrin would have married her if he'd known beforehand that she is a witch. To find out one way or another, Endora arranges a flashback to the days when both Sam and Darrin were still unattached and unaware of each other's existence. The results are most startling -- and not at all what either Sam and Endora had expected. Written by Paul David and John L. Greene, "What Every Young Man Should Know" first aired on May 26, 1966. ~ Hal Erickson, Rovi