I really don't think the problem is you pushing him away. I think the problem is that you have no idea what you want. It seems like you are kind of fighting with yourself over whether or not you actually like this kid. The thing is, you don't have to decide right now whether or not you are in love with him and want to grow up together and get married and such. It sounds like you have a really great friendship, that may one day become something else. Beyond that, it sounds like you guys are considering the possibility of it becoming more than that. People actually do that all the time. It's just part of attraction.
The main thing to remember is that you don't have to feel pressured to make up your mind right now. Keep on being good friends with him and keep on hanging out. If you guys are comfortable with it (which it seems like the case) maybe you could talk a little bit more about how you feel about each other. That might help to sort out your feelings a little.
For the time being, I think "half-liking" can kind of be interpreted as just being unsure about your feelings. Like I said, there's nothing wrong with that right now. You have plenty of time to let things sort themselves out. Give this whole thing time. I know that's easier said than done because you probably want to know where this is going now, but it's probably best not to rush into anything you are unsure of.
If you need to talk to anyone about this, or need help with anything else, don't hesitate to contact me. I would be more than happy to help.
Take care.
-Isobel