If you have dreamed about siblings having intercourse: There may be no point in ruining relationships, as everyone will find the other's to be useless. Even though you may have strict or firm ideas about your relationship or cooperation, others may not share your views. Having siblings in a dream indicates that the siblings will be very attached to each other and the troubles will decrease, patience and a problem-free life. Not allowing siblings to have intercourse in a dream is interpreted as a compensation for a mistake made, a trouble-free life and happy peaceful days.