I used to dream about a man chasing me. This happened every week with the same man. One night I decided I was going to turn and face him so I did, he stopped and walk away. I never had the dream again but after a few months I woke up to the same man sat on the end of my bed. I ended falling asleep with him still there. A few months went by and I moved. I now see this man when I'm driving. Eg i will stop to let him cross the road and he disappears. Is there any way to speak to him to see what he wants?
There is a word for this;
Relax about the whole situation, then take a look about how much you see this man when not thinking about him for a week or so. If you still see him, he may be a spirit, or he may be quite the figment of your imagination.
agree with the above commenters. Either you are thinking too much about it or the man is a spirit. Also the dream of the man chasing you could mean that the man was after you for some reason. Maybe he wanted to tell you something. But why he walked away later, I don't know. Best option is to talk to him the next time you see him.