I thought a friend from school liked me and so on Wednesday I messaged him, thanking him for teaching me something during class. He never messaged back, so I'm guessing that's a rejection. He is a friend of mine so I thought he would at least answer. I don't know. Maybe he meant to and just never got around to it. But for now, I'm going to assume rejection. How can I get over him when I have to see him in class on Monday?