i know right now it seems hopeless, or nothing good will happen if you aren't with him, but you're young, if it's meant to be it will happen. talk to your parents. my parents always had a rule [kind of a family rule cuz my cousins even had it] no dating until your 16 [not a bad rule imo, but i can see how some would hate it] you could mention it to your parents, try and set their minds at ease, and come up with a middle ground. but i don't know your parents side, so i don't have strong advise for you.
if you want magical help [remember you still need to talk with your family, it won't work on it's own] burn either an orange, purple, or yellow candle. yellow works for persuasion and confidence, purple works with tension and orange for encouragement. visualize your desired outcome, your parents understanding and letting you have a bit more freedom. light the candle and let it burn down, visualizing your desire. the next day talk calmly to your parents about how you're 14 and you are wanting to spend time after school with friends. tell them you will call them to let them know where you'll be at all times, and you will be home by 5 [i'm assuming school lets out at 3. it may not seem like a lot of time, but baby steps] don't bring up dating. you can see the guy you like as a friend, it's the same as dating, so you should be happy for that.