This year, when my oldest daughter started kindergarten, my wife began to work part-time about four times a week to help with the family budget. Until now, I have been a stay-at-home dad taking care of the kids, so I smiled at my wife, thinking that being a husband who could help her financially was a good thing. However, recently, my wife seems to have been drinking tea and chatting with a young man as big as a pigeon who works part-time at the same workplace.