Hua Jai Toranong

The main couple are married with a kid, but the husband has an affair with his secretary and continues to be with her. His wife knows, but they stay married for the sake of their daughter. Eventually, the wife gets sick and tired of the way her husband is and asks for a divorce, but he doesn't agree. Later on, the owner of a company and a younger DJ both start to like her, and her husband gets jealous.
(Source: asianfuse.net)