Friend from the Past

So I'm tdamon and there's an amazing young 16 year old girl, named Tori and a 16 going on 17 year old, bad boy so to speak, named, Justin, and they were best friends until the sixth grade and haven't spoken to each other until Justin and Tori run into each other at school. That they are completely dumbfounded that they've gone to the same highschool for the past 2 years and have never spoken to each other .What's going to happen? Will they become friends again or will things never be the same?