recurring dream

For the past 3 years i have had the same recurring dream.They only occur about every 2 - 3 months.In my dream,the scene is significant to where i actually am that night,for instance,if i'm home,the scenery/layout is my home surroundings,if i am at my parent's house,the scenery/layout is significant to their home,my friend's home,the same.So my dream is that i'm asleep and i wake up to someone standing outside my window.I know it is a male form,but it's dark outside.I cannot see their face.In my dream,i am scared and run to the next room.Immediately,they're outside that window.I run to the next room,immediately they're outside that window.In my dreams,which usually are very brief,the person outside the window never gets inside to me.It's just like they're terrorizing me with their presence.In all the 3 years of having this same recurring dream,the scenery has always been significant to where i was a the time i have the dream,as mentioned earlier.Also,in the 3 years of having this same dream,this faceless person has never gotten inside physically to me.And also it has been consistent with occuring every 2 -3 months.I never wake up breathless or scared to death,just kinda jumpy and have to get my "bearings" and realize and tell myself "ok,you're awake,it was a dream" and i am always able to go back to sleep with no problem.I even tried to write down on the calender when i would have the dreams...maybe it was my time of the month,maybe a full moon out,maybe i had had a bad/weak day.....but nothing was consistent with the dream.It just came every 2-3 months as usual.Last year however,maybe around the spring/early summer,i had the dream again,right on schedule,as it had been about 2 months since the last one.But this time the scenery changed a bit. I was staying the weekend at my best friends house and her couch is against the window and that's where i was sleeping which would have me facing her long wall where her TV and Entertainment Center is.But in my dream,everything surrounding me was consistent to her living room area,except for the long wall where the TV is,was like french doors or a patio window that opens out onto a patio area.The faceless male was outside there but this time there was a porch light on but his back was to me and he appeared to be on a cell phone.I got up to move and he never moved from the window or got off the phone to turn around and meet me at the next window in the next room i was walking into.I went into my friend's room to wake her and tell her that someone was outside and she wouldn't wake up.She just grumbled something at me and rolled over.So i'm thinking,"omg,i'm all alone in this".So as i am walking out of her room into the small hallway leading back to the living room where i was sleeping,i passed the opening from the hallway into the next room and i felt a hand gently placed on my right shoulder.As i turned slowly out of fear to see who it was,before i could see the face,i woke up.And that was the last time i had the dream,which was a good 6- 9 months ago.Well,lo and behold if i didn't have it again 5 nights ago.This time much different.I was at my friends house again,sleeping with her little girl in her room.But in my dream,i was at my parent's house.And in my dream,i had obviously had a dream the previous night and it was the same way.Male form outside the window,room to room,but this time he had a face that i could see.And,still in my dream,it's the next day and i'm sitting outside on the front porch with my mom having coffee late in the evening and the house to the right of her,there is an older black family living there.But in my dream,as my mom and i are outside on her porch visiting,the man in my dream the previous night walks out on the porch next door,lights his outdoor furnace and smiles and waves at us and sits down with a cup of coffee.Never approached us.Just smiled and waved like any neighbor would.And the smile wasn't one of those creepy smiles.Just a neighborly smile and wave.Then i woke up.In my dream,now that the face has been revealed,this man is of no significance to me,like anyone i can remember knowing or have known.He's around 30-40,tall nice looking white man,blonde,kind smile.But however,i know i have seen him somewhere.Whether it's at work,the local mall,a festival...etc.But somewhere i've seen this person.I just can't place who he is or why he would be in my dream.A very attractive man with a kind smile.Just cannot place where i've seen him.Or for that matter why he would be in my dreams.