Why am I acting like this?

I don’t know am I psychotic or something?! I’ve been acting really weird lately and I know I have been but I don’t know why…truth is…I kind of like it. Like I’ll read lots of really scary stories right before I go to sleep just because I love the feeling of being scared. I totally freaked out my friends, and it wasn’t just a haha I got you thing. We were at my house and we were walking on the trails outside my house at night when it was really scary. We were in two groups and we had walkie talkies just for the fun of it. Then I slowly made my way to the back of the group so no one could see me and then I jumped into the bushes. I got out a thing of fake blood and smeered it absolutly everywhere. And then finaly I put on this track (I planned this out very carefully) that sounded like a wolf growling and played it really loud for thirty seconds because I knew that was enough time for them to hear it an realize I was gone. I heard them coming back so I hid myself behind a bush they started freaking out and started laughing like really kreepie and they were going totally krazi. And then they heard me. I had put blood on my face just in case that happend. So I laid down into an awkward position and they came around and started screaming bloody murder. It worked for like thirty seconds before I bust out laughing then I propped up on my elbows and was like, “Whats wrong? When he kills, he does it fast!” and that brought on more evil laughing. We walked back and they kept saying “That wasn’t funni” and I always said something really witty and kreepie right back to them. I don’t know why but I just love the thought of being scared or seeing someone scared. Seriously I go to scary movies and LAUGH. People look at me like I’m krazi and I’m kind of starting to think that I am. Another thing is sometimes I just feel so…wrong. Like I’m not me its like I’m just borrowing someones body for a while. It’s really starting to make me question. The thing is…I didn’t come here for something to make it stop…because I love the feeling. What I want to know, is what is wrong. I need an answer for this. The other night I was having a terrible dream, but I knew it was a dream but I was still scared it was like I knew that it could come alive and kill me in my sleep. I kept trying to make myself scream, but nothing would come out. I did everything I could to try to wake myself up…but nothing worked. It was like I was stuck in my dream and nothing could get me out of it. This stuff happens a lot when I’m alone too. I always feel like I am being watched that someone is just waiting for a reason to try and kill me. And when I am not reading (because I don’t watch television other than the occasional horror movie) I’m always thinking of something that could happen to me or something that I would become. It’s always violent. Please tell me what is wrong.