NKKD-181 The husband sent his wife to work part-time and received a bitter ending

This year, when my oldest daughter started kindergarten, my wife started working part-time about four times a week to help the family budget. Up until now, I've been a stay-at-home mom raising my children, so I smiled at my wife, thinking that it's a good thing that I'm a husband who can help her financially. However, recently, his wife seemed to be drinking tea and chatting with a young man as big as a pigeon, working part-time at the same workplace.