Beginning this relationship

So, I met this guy a few years ago on an exchange and we got on really well, and when we got back, I told him I liked him (via text, because he lives 3hrs away). However, we were both only 15 and neither of us had had a relationship before, so we didn't commit to anything. Anyway, a year ago, a group of us met up, and I found that I still had feelings for him, but I didn't have a chance to talk to him about it. I was worried this would be the end of it, but he organised a reunion this summer just gone. In the end, only I went, and so I spent a couple of nights at his house. I felt we really got closer; we watched films together (he put his arm around me :3), went out to meet his friends, visited a museum (we're both quite nerdy) and generally got to know each other a lot better. However, since I've got back, I've only had a couple of texts from him, and the last one was over two weeks ago. I really thought that he was becoming more comfortable with me, and might be able to tell me how he felt (he's quite shy, as I am, and as I said, we're both complete relationship virgins). I don't know if he is simply scared of telling me how he feels when we're not f2f, or if he doesn;t want to talk to me. So basically, I need advice on: what do I do to encourage him to speak his mind, why hasn't he been texting very much and any other relevent advice (please don't advise ditching him, because I think I'm too emotionally involved now to do that) Thank you, please please please help!!!

Yes, I did post on here before, but I'm still having issues. I am trying to organise a meeting, but his lack of texting is preventing me from doing anything, and it's really stressing me out