친구가 가족에게 급한 일이 생겨서 떠나야만 했다고만 말할 수 있습니다. 상처받을까 봐 떠났다고 말할 수는 없습니다. 왜?

You can only say that their friend had a family emergency and had to leave. You dont say they left for fear of being hurt. There are so many Why?