7. When she discovers that her old classmate gave birth to her second child.
“I don’t even have a boyfriend and I feel jealous,” confessed one Japanese woman in her 20s. There’s nothing she can do about it, but she still can’t help comparing it with her current situation and becoming green with envy. “There’s a baby boom around me, it must be the water,” some women may joke, pretending that it doesn’t bother them, but they may secretly be resentful inside.