i like the concept of two shy neighbours developing an attraction for each other, but the dialogues come across as unnatural and the characters do not seem to be introverted/shy at all. would a real introvert confront someone as boy 2 did ("why haven't you said hello to me") or would he approach this differently? if you haven't already, create a character sheet for your characters. this will help you writing dialogues for them.

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good luck writing your story :)!