The three sisters in high school went from being close to each other to falling apart. One person quit the three-person group early, and the other two had feelings for each other but pushed each other further and further away because they could not accept and recognize their feelings. The ending may be that the unfinished chapter of many people's youth ended abruptly in that summer.
Short story, first person perspective.
Lightning Protection: Youth Pain Literature, BE, enter with caution!
Mission: Youth is gone forever, cherish the present moment