Pulling away, but trying to stay

Why am i this way? I finally have someone in my life that likes me and finds me cute and all of those  things, and at first I really liked him, but now I'm getting more and more annoyed with him, But I still want to talk to him and see him. What the Hell? He is nice and sweet to me but he is also very immature which I actually hate. I've told him that I might not want to talk to him in the future because I can become very moody. I like being alone. That's all. I don't think that is too much to ask of anyone, but no one ever understands that I need to be alone. I dont want to hang out with people. I am my own best friend, and I'm okay with this for the most part, but now this guy wants more than I can give him, and I feel my self trying to pull away but I want this. This relationship is good for me. I have to keep it. I have to keep liking him, because I must become normal.