The girl I like says, "You are the big brother in my heart". What should I do?

This is a bit tricky, hehe, but I understand something. Because I have had a similar experience, I will also say something in other languages in front of the other party that the other party can't understand. For example, I really want to like you or you are cute and likable. That's because I thought about it in my heart, but I don't think I can accept this cognition. I just say it casually, and I will feel inexplicably relieved and feel that I don't like you as I imagined. . . After the appointment, based on courtesy. This sentence is necessary, or is it suggesting that the other party can ask her out more in the future, just treating you as a buddy. . . I will also like to share happiness and unhappiness with others, not to mention being a boy, I will feel satisfied, but not yet. . . All in all. She is not interested in you, but out of curiosity and satisfaction, she will have an affair with you, but she mainly regards you as a buddy, that is, she can be more than a friend and a lover. . . Do not love you. . . I suggest you don't continue to confess, but don't neglect her or treat her as a buddy. . .