Why isn't he making the move?

Well to be blunt if you don't initiate it or talk about it then you're never going to know. He's probably nervous of doing the wrong thing invading your personal space or being inappropriate in which case he's looking for permission to be up close with you so by hugging him you've going to show him that you think it's all right and then maybe he'll relax

Don't talk about it or confront it because that will just make him feel insecure about it and he'll end up doing it but not for him but rather for you. it will take time but he will come around to it.

BUT there is something you can do to help him get there quicker. Just be cuddly. If you guys are watching a movie or something just kinda cuddle up close to him. If he sees that your a little more physical then he won't be as nervous about it.

Honestly he is nervous, I know I was when this happened for the first time with a relationship, and I will get easier and he will come around with time, just don't push the issue with it or you and him will feel uncomfortable for awhile, but just him a hug and kiss sometime just to let him know you care about him and want to move on in the relationship and things will go good from there, but just take your time and enjoy your teenage years, it goes fast, trust me, and just have a good time, and enjoy being with each other as long as possible, so I hope I helped you and good luck!

I'm guessing you both are young by your age, so that's kind of normal. He sounds like he hasn't had a lot of experience so he's really nervous about it, and that's why he's kind of stand offish when it comes to being physical. If that's the case then you should make the move. Start off small though, like with a hug to make him comfortable. Even a kiss on the cheek is good!