Having a crush is one of the best feelings ever. That flutter in your stomach, the endless thoughts about them, the hope that maybe they feel the same way.
Here's my advice: tell them. Yes, it's terrifying. But you'll never know if you don't say something. And if they don't feel the same way, at least you'll know and can start moving on.
While You Wait
Don't read into every text. Don't analyze their social media. Just be yourself and let things develop naturally.