My friend and I had the same dream last night is it normal?

We have always wanted to be brother and sister. We were walking through the woods and then we came across my girlfriend's dead and mangled body. We kept walking and saw six dead dogs and ten dead bodies and then we came to a man who said he had killed my girlfriend. In my sleep I yelled out "YOU SON OF A *****!" then the man stabbed us both and took us to a dark room. in my sleep i kept yelling out bad names and things like that and at the same time our moms woke us up... we live in different houses.