Prince Charles first saw Diana in 1977 at the Althorp House: one of the family's properties in Northamptonshire, England. At that time, he was dating Lady Diana's older sister, Sarah. Three years later they met again through a mutual friend, Philip de Pass. After that occasion, Charles and Diana started dating.
In 1981, Charles proposed to her at Windsor Castle. She accepted and at the age of 19, Diana quickly became one of the most talked-about women in the world. Unfortunately, things would soon take a turn for the worst and their relationship would come to a tragic end. Watch the video above to learn more!