My Ex boyfriend? Back together?

Okay, well I had a boyfriend over the summer. I had liked him for about 6 months before we went out. We went out for a month and a half. (I'm 13 and he's 14) So we got in trouble in our neighborhood and he had to move. Since he had to move, I broke up with him because I didn't know how much I would see him. When we broke up he cried. I felt really bad. but I didn't know if I could trust him. I still talk to him a lot. I miss him, and I want him back. I was texting him the other day and I told him I missed him, and we needed to hang out and he said he missed me too, and we did need to hang out. He sent me the song "Fall For You" bye Secondhand Serenade. My uncle [my ex met my whole family. He went with me on Fathers Day to my uncles moms house.] was telling me about how I could have my ex back like 'that'. And I do want him back, I miss him. What should I do? Do I have a chance?