Somethings Missing

I feel like something is missing in my life. But what or who is it? I love my current boyfriend very much. All he wants to talk about is sex. Don't get me wrong, I love having sex w/ him but I want more. Its been 3 days since I've seen him and I miss him but he doesn't seem to miss me. Hurts my feelings. He only lives a block from me but cant find the time to visit me. I'm not comfortable just popping in on him at his house. He did invite me over for pizza w/ him and his nephew last night but after not hearing from him all day I didn't feel like I should just jump up and run over there. I give up!! I feel like giving up on it all.