Being in love with a brother-like-friend

This story is based on a girl named Noah and a boy named Antony. They lived in the same appartment. And both of their houses were joined. A door at back was connecting both of their houses. So basically they lived together. Noah's mother was friends with Antony's mother. And Noah's father was in the same business as Antony's father. Physically they acted like a family. They did breakfast whenever they wanted in any house which depended on them. If Noah's parents were not home she would go to Antony's house and play wth him. So the story begins from Noah being in 6th grade.