A Forever Summer by Havelah Mclat

It’s hard to know who you can trust, when you can’t remember your past.
Katherine is an artist struggling with the grief of losing her mother at a young age. When her father dies, she and her sister unexpectedly inherit a house in Westchester Bay—a house she doesn’t remember.
When she finds a strange collection of old letters addressed to her, she starts to question everything. Her dreams and drawings all seem to hold a secret, a hint of who she was before the day her mother died.
While searching for answers, she befriends Janson Caswell: a kindhearted man with a complicated past of his own. The deeper their relationship grows, though, the more they are faced with a darker reality.
Will the truth tear them apart?