Second Virgin (2010)

Nakamura Rui is a divorced but highly successful producer in publishing. She meets Suzuki Kou, an ambitious buisiness man 17 years her junior, and finds herself getting aggressively persued by him. Eventually they begin a steaming affair. Meanwhile, a young couple moves into the house next to Nakamura's and the wife (Suzuki Marie) begins to confide in her about the frustrations of their conjugal life.