Most Helpful Girl
I'm going to be honest, since no one is worth obsessing over. It's taken me a few years to learn this, but in my experience, when a guy is interested enough in you to want to date, it becomes obvious eventually. If you are scratching your head wondering if he likes you, reading into every little thing (like a nickname), and always have to initiate convos or meetings without him reciprocating that effort, there's a reason. Look at his actions. People go out of their way to find reasons to meet up and talk to a person they like, it's just human nature (and what you're doing). If you don't notice him doing these things back, then you have your answer. To be honest so far it seems like he's only given you reasons why he can't date you, and you are only seeing reasons why he can. I would just stay friends, you've made your intentions clear, the ball is in his court. If he wants to be with you, he'll let you know. And if he isn't, I promise you, there is a guy out there who will make it clear that not only is he into you, but he will fight to be w/ you!
Most Helpful Guy
You're 15 and presumably he is too. School is the second most important thing in life, the first being family.
He doesn't want his son's future to be off the rails from a distraction from school work. I am sure it's nothing you have done and certainly not judgment from his Father.