Female students sometimes send you some ambiguous messages. For example, the last time she sent a message that she wanted to see me, but after I went, she always stressed that we were classmates. ...

Girls always like to be duplicitous. There are two possibilities for her to do so. First: I like you in my heart and I am shy when I see you. Second: she is bored and wants to find someone to relieve her boredom. Or to put it bluntly, I just want to find someone to play with. I suggest you ask her directly what she means. If it doesn't take long, it will hurt two people.