<u>Flashback</u> is a plot device, which interrupts a narrative in order to show past events. Dramas often have this.
According to this paragraph, I would say that the tone is sad and informal. It could be considered sad because of her personal experience. How she also felt when her first boyfriend left her for another girl.
Best wishes!
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may i contact u in a different website because brainly dose not allow me to type as many words as i can for the correct answer
Explanation: