In today's world, ethical decadences are becoming more prevalent every day. One instance of moral deterioration is adultery. This study looks into the current state of affairs and the effects of adultery and discovers that women commit adultery with ex-lovers, relatives, well-known people, and occasionally with strangers. Social media platforms including Facebook, Whatsapp, Viber, and Imo are frequently used today to commit adultery. The main causes of adultery include a lack of moral sense, a decaying society, a lack of familial ties, and technological advancement. As a result, adultery leads to murder, divorce, domestic violence, flogging, STIs, honor killings, stoning, and other crimes. It was conducted using secondary resources that were gathered from real websites, books, articles, and newspapers. This study attempts to explain adultery using the opportunity hypothesis, which holds that having more opportunities leads to infidelity. Legal authorities can gain a good understanding of the causes and effects of adultery, which will enable the government develop policies to reduce the practice in Bangladesh.