What does the girl mean by 12345? What does it mean for girls to eat spicy strips?

First of all, she certainly doesn't hate you. If she hates you, she doesn't have to think about it. Second, maybe you are not familiar with it. Maybe she will consult her good friend. Then, maybe your confession is sudden. She needs to calm down and think about your relationship. Finally, she should at least have a good impression on you and think about how to promise you (hehe, just kidding ~). What you should do now is to wait and be patient.