Need some major help with my crush

Hi! My name is Allie, and I have a question. So I emailed my crush 4 days ago and he hasn’t answered. I got really depressed yesterday because I really like him. And I thought he liked me too. I have really bad social anxiety, so I only talk in person about school related stuff. And I’ve only talked to him 3 times. But he would always look at me. In the hallways. While we were reading in history, and in history when we took tests we got to pick our seats 2 out of 3 times he sat next to me. Am I like really overthinking this? Could he still answer?? It’s stressing me out big time. I just feel so sad thinking about why he won’t answer. I’m being really mean to myself and I hate it. So I was hoping maybe I could get advice or something to help. This is the email I sent. Hey Jack!

This is Allie, I know this is kinda out of the blue, but I was wondering if you were going to Cavestock? I wanted to ask if you'd sign my yearbook - if you're around. I was thinking about our history class earlier this year, I know we didn't talk much (Sorry - I'm not great at starting conversations!) but you always seemed really cool. So I just thought I'd ask:)

Please let me know what you think❤️