Male Protagonist, I Just Treat You as a Brother

Wearing books + female supporting role + childhood sweetheart Zhang Xinyue dressed up as the female supporting character in a novel she had read. She lived before the story happened. She had no system, no golden fingers, and did not know the plot of the story. She only knew that the female supporting character ended her life because she could not get the love of the male protagonist. Zhang Xinyue would not be like the original character. The Lord is like this, who said that childhood sweethearts will become lovers, and becoming brothers will not make the relationship more stable. Just when Zhang Xinyue developed their relationship towards brothers, the hero fell in love with her. The problem is that the plot has not yet happened, how will she deal with this relationship? Headache!