Shadow Persons

One night I was talking to my boyfriend about paranormal experiences we've both had in the past. He explained that when he was younger he lived in a small house with his family and at night he would sometimes take a walk when he needed to clear his head. One night he was walking by a cemetery when he noticed a tall figure of a man keeping pace with him some yards away. He said the man wasn't getting closer or father away but he was just walking exactly at his rate. It's pitch black in the cemetery at night but the man was even darker than the blackness. He explained that soon after he started seeing, what he came to know them as, shadow people. He said they would appear in his room or other places he would be and taunt him. As time went on, they began to focus on not only him but the entire family. He took me to the cemetery he was talking about and his mom tagged along. While we were out at the cemetery I noticed something standing at the corner and I was trying to figure out what it was when it started walking towards us at a high rate of speed and I saw it was in fact a tall man, no features. Whatever he was made up of almost looked like smoke. (I know this sounds Hollywood). Since all of this, my friends and I have consistantly been seeing these figures. As I was locking my door to leave last night, I glanced over to the field behind my house and noticed a man standing at the corner of my field. It scared me because we live in the middle of nowhere but it didn't come to light to what I had seen until I pointed him out to my boyfriend and he was gone. Whats the best way to get them to leave me alone before it gets as bad as it did with my boyfriend?