Learning Curves #3: Open Enrollment

Cassie invites David next door for lesson three, but it's not what he expects.

Serena is there, too, and the two older women tease him like a couple of schoolgirls, leaving him angry and confused about their ultimate intentions. But when he threatens to break up the class, Cassie puts her foot down hard, and the three explore a lesson plan that soon overwhelms them all.

Throughout a long afternoon, David learns more about his appetites than he ever has before, and he soon realizes that his feelings for Cassie run much deeper than he thought.