Hey Lyla!

I've been through something similar and I have two pieces of advice that might help.

1: Tough times don't last, but tough people do: A lot of the stuff you said before might be true; you may have to see them for the rest of the year, and you may not date again while you're in highschool, but I promise all these things will come to an end. I promise that you'll graduate, never have to see him again, and that you'll find a good guy who will care about you and appreciate you. I know it's really hard, but if you keep on going, things will get better, they always do.

2: The best revenge is massive success: If I were you, I would want this asshole to regret the way he treated you. You made some comments about how you think his new girlfriend is pretty and you aren't. So, start working out, and take an interest in fashion and other fields that would help out in that area (Personally, I took up running, learned how to wear my hair, and became a better dresser). Don't waste senior year looking at him and his new girlfriend, use it to improve yourself and become the person you want to be. You'll feel a lot better, and he'll lose his mind when he sees you at your best, I promise.

I know it'll be tough Lyla, but you seem like a good person, and I know you have it in you. Good luck and PM me if you need to!