Should i call back or give him some space?

I know that some people think I'm too young to be in love, but I think sometimes I really could be, but then again not sure I know I strongly care about this guy and I think he really cares about me too.. only problem is I moved, and I'll be gone for a year up at my Dad's, but will be able to come back after then.. but I called him, and I kept asking him if it was a bad time and he quickly kept saying no and he sounded happy that I called him, but then I had to go so I asked him if he could talk again soon & he said he would call me the next day, but never did.. I know this sounds pathetic, but he showed all the signs of really caring about me when I was with him and he was always sweet during the 2 years I knew him, and I told my stepmom & she said it was probably, cause he was trying to move on & was not calling, cause he could be a little heart broken when i told her he was turning 16 (when i gave her his age) and he kept always saying I'll miss everybody & want to move back & a few times when we were alone he said he was going to really miss me & I could tell it was really tough for him to say that... I'm really sad & I can't stop thinking about him and I get all those signs when I'm around him that make me feel like I love him & I miss him.. If anyone could tell me what exactly u think he's going through right now & tell me if u think my stepmom is right that would be really nice of u.. sorry this is long.. and it kind of grew where I started feeling like I really loved him the beginng of the 2nd year.. i think he could maybe love me, but anyways yeah.. thanks for reading