I like a high school girl who wants to borrow money from me, what should I do?

If you have this ability, lend it to her. No matter if she is your girlfriend or not, she is a good classmate after all. Call her and tell her that you will go get the money right away and deliver the money in person. In this way, if she doesn't know, it means she is a liar; if she agrees, or lets you put money on her card (the account name must be her own name), it means she really needs money; if she tells you that she doesn't need it anymore Yes, maybe she is testing you.