This is a talk given by Jason and Crystalline Evert. Both are full-time apologists with Catholic Answers and here they are giving a chastity seminar called “Romance without regret.”  It is a fun, compelling, and to-the-point presentation. Highly recommendable for all, especially high-school age. For more, I found a few websites:

http://www.chastity.com/

http://shop.catholic.com/home.php