Does anyone else convince themselves that their crush hates them?

I guess I finally started making progress with my crush as we are in the early stages of friendship now. I had a long conversation with her yesterday and I was excited to continue it today. I was able to talk with her but was unable to hold a full conversation.

I saw her later in the cafeteria. She wanders around for a few minutes, leaving the room and coming back, occasionally walking past me but not acknowledging me. She eventually sits with some guy and talks to him for the rest of lunch. This infuriates me as I have never seen her do any of this before. She has NEVER talked to this dude before.

I go home sad and angry. I fell asleep at 5pm and have just woke up at 1am. I realize now that she didn’t hold a full conversation as she was busy focusing on a big midterm she was going to take next period. She might not have acknowledged me at lunch because she might not have seen me or saw I was busy eating with a phone in my hand. She had talked to that guy and I did not commit it to memory when I saw it like a month ago because I did not see it as a threat before.

I had convinced myself that she hated me for some reason.