Bill is your ex boyfriend you guys broke up because you both thought it was better to move on since you guys are still in highschool and you have a lot on your guys mind, like stress from highschool and whatever else you would it to be. Your 16 and he is 17. He still kind of misses you and he also still kind of loves you. He hated how you guys had to break up but it was probably better for the both of you. One day you both were in the same class and were assigned to sit by each other.