How do I get my girlfriend to feel like our relationship is special again?

My girlfriend and I started out as friends. We were introduced by a mutual friend, and soon after became really good friends. I developed a crush on her very quickly, and she got the same feelings for me. I asked her out, and we became infatuated by each other. For a while, we were a perfect couple. We were hugging and kissing all of the time and we held hands in the halls (we are both 15). A while later, I was texting her and I inadvertently brought up the subject of our relationship. That's when she said that, even though she didn't plan on doing it over text message, that she was breaking up with me. I asked why and she said that it was because I didn't feel special to her anymore. She said I didn't do anything wrong, and that I was absolutely perfect. I just didn't feel special. She then told me that it is wrong to break up over texts, so she said that we would discuss this on monday. She's going to break up with me. We're going to "talk" in about an hour. How can I make her feel like our relationship is special again?