What is the purpose of a girl's private letter to the short video of the boy's past life dance?

The reason why this girl showed you the video and photos of her previous dance is because this girl likes you, because she likes you so she will let you understand her past, there is also this girl must be more narcissistic, so she will put her good-looking video and photos to show you, want to let you know her beauty, and also hope to get you to cherish, this kind of girl is in the heart of the heart have you, and also like you people, so to care about you so much to share her past with you, also want to let you can more comprehensive understanding of her. This kind of girl has you in her heart and likes you, so she can care about you so much and share her past with you, and she also wants you to know her more comprehensively. So I think if you like this girl, you can cherish her

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