This Beautiful Live, by Helen Schulman

Well done book. Richard and Liz Bergamot's New York world is pretty perfect, and their children's too- private schools, lots of extracurriculars, a warm and loving family with economic secutiry and a stable life. When their 15 year old son Jake is sent a pornographic video by a younger girl he rejected, he forwards it to his best friend, in a mistake that leads to disaster for everyone involved. Reminded me a bit of Anita Shreve's Testimony- teen sexual activities recorded and shared, and the fallout that can ensue, but was much better.