Maybe she likes you, but you don't like her. As you said, you think your relationship is pure, which means that you have never loved her like that, and since she is the first, she naturally won't express herself directly like others. I guess you usually have a good relationship with her. She is very happy with you, but she likes you for more than a year, but you haven't felt it, have you? So she wrote this poem for you. Look at the explanation given to you below. It is the official understanding of this poem, which is quite in line with the girl and worth writing. If you have no feelings for her, tell her not to make her so sad; If you like her, then, this. . . I won't talk about it.
Generally speaking, life is like this. If you don't give up on him, you give up on him, or he doesn't give up. There have always been two views on the author and theme of the poem White Boat. Since the other person is a girl, just say one. One school thought that the author was a woman, but she was not favored as a lady's wife, and was slandered by a group of concubines, so she wrote this poem angrily. It also means bitterness.