What does it mean to sleep alone and dream about someone all the time?

This is a nightmare, commonly known as ghost bed. I used to do this when I was in high school. Sometimes it is difficult to breathe, and my eyes can only be opened a little. Obviously, I can vaguely hear the people talking in the dormitory and see them, but I just can't move ... Then I specially checked it, which seems to be caused by psychological stress or something, not physical function damage, so don't worry too much. More often, I will find that you breathe lightly but quickly, or your fingertips are hard. Do a few more tricks, and then you can play slowly. You can try. Also, you should relax, relieve stress and go to bed early. I sleep late most of the time when I have nightmares. I hope it works for you ~