He was my bestfriend, what happened?

One day he was my best friend, next thing you know were not talking anymore?! When Skyler turns 15 she realises just how much she misses him but the worst thing is she doesn't even know why they stopped being friends? At the start he was just another boy, but as time goes on and they get to know each other more they grow closer, but what will happen? Will he just go and forget about her or will they meet again?