Reckless Little 15 - Carleigh's Confessions Series, Vol. 1 by Liana Resles

When Carleigh DuMetz turns fifteen, she quickly joins her mischievous friends in seemingly innocent adventures, which brings to light her naïveté. She finds her first love in Aiken Lyons, a handsome young man from her neighborhood, who is friends with Richard - a predatory adult - who also has designs on Carleigh. This story is based on actual events.