Yeah of course, I cried in my dreams suddenly when I wake up tears will be there in my eyes. Most of the time those heartbreaking situation will be the exam results and going late for exam. I don't really think I will cry for going late for exams but in dreams its very hearbreaking sometimes I even wakeup in fear and realise a heavenly feel like thank god im not a student anymore and I don't have exam tomorrow. Then those tears will become happy tears.