The meaning of dreaming that you are sad is that you need to learn from disappointment and only to be happy. Try not to live negatively. The dream may be a reflection of how you feel in real life. If you dream that someone is sad, the interpretation may be a projection of your own feelings. Maybe you are sad about something that happened to that man.
You may look in dreams interpretation for other symbols :
Sailor : The meaning of dreaming about a sailor represents desires for adventure, freedom and exploration. You are ready to venture into deeper waters, especially ... ml">">
Saint : The meaning of dreaming about a saint is that you receive a special message from the spiritual realm. Alternatively, The meaning of this dream symbolizes ...