Hockey was responsible!

Aristotle Onassis was so thrilled by the confirmation of this marriage that he donated a million francs to the Red Cross in 1956, especially since it was his idea in the first place.  However, two things almost derailed it.  One was a $2,000,000 dowry, and the other was a more, um, delicate matter.  The latter was settled when a doctor declared that the culprit was the bride’s hockey-playing days in high school.

What was the “delicate” matter?

Answer: (select the text below to show)

Grace Kelly’s virginity.

Question by Sumant Srivathsan