If you dreamed that your brother-in-law was crying: You will be able to complete your work during the day, there may be developments that will cause you to be sure about the reliability of a person or to lose your confidence completely. To see that your brother-in-law is crying in your dream indicates that your brother-in-law will have a conversation with you soon, your troubles will end, a full life and good developments. To be happy when your brother-in-law cries in your dream is interpreted as permanent happiness, leading a peaceful life, and good developments.