The Boy Next Door is a 2015 American erotic thriller film directed by Rob Cohen and written by Barbara Curry. The film stars Jennifer Lopez, Ryan Guzman, John Corbett, Ian Nelson, and Kristin Chenoweth. Lopez plays a high school teacher named Claire who, in the midst of being separated from her husband, has a one-night stand with a younger neighbor (Guzman), who develops a dangerous obsession with her. The film received largely negative reviews from film critics, but has performed well at the box office, grossing over twelve times its budget since being released.