Pizza Guy Confessions: #1 The Two Teens

Out of college, Jeremy took a job as a pizza delivery guy. Most days were mundane, but there were four special deliveries which he would never forget. This is one of them.
He delivers to two eighteen year old high school students who are home alone. Their parents are out of town on business. One is a virgin, the other a nymphomaniac. Guess which one starts their fun sexual adventure.