Can you recommend so websites for an assignment I am doing on the ancient origins of Valentine's Day and how it was celebrated in ancient times and today?

Answer 1

http://www.history.com/topics/valentines-day

http://en.wikipedia.org/wiki/Valentine's_Day
As with all Wikipedia search results, be sure to check out all the external links and further references at the bottom of each Wikipedia page.

http://www.americancatholic.org/features/default.aspx?id=8
Two links in here that are helpful.