Her Nostalgia or Obsession

She had been secretly in love with him for two years and often thought about the past. She understood that he might just be an obsession in her heart. Later, she also understood that what she missed was not him, but them, the noisy cram school classroom, and the summer when everything was good except the heat. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.