I read the book "Watch Me". This book is categorized as a psycho-obsession thriller, and after reading it I can definitely agree that it fits this description. The book is about a college English teacher named Kate who is coming down from her prime as a writer herself. She has recently divorced her husband, which was described as long overdue. As her friend consistently tries to set her up with a man named Raul, Kate becomes distracted by one of her students. Said student is a mysterious but talented writer known as Sam, who, as the author reveals chapters in his point of view, appears to be not only extremely analytical and judgmental, but absolutely infatuated with Kate and her writing.
The chapters alternate between Kate and Sam's perspective and thoughts, and explore both of their personal struggles and development. Eventually Kate diverges from her taboo thoughts of Sam, and starts going out with Raul. Sam, meanwhile, has spent most of his time stalking Kate, in his free time getting into qualms with his addict mother. He sees Kate and Raul becoming close, and decides to do something about it. Raul is found duck taped and dead in his own home days later.
Sam continues his pursuit of Kate while Kate experiences emotional downfall, feeling separated from her friend after said friend becomes a mother, and her significant other turning up murdered. Sam is positive this will be forgiven when he pronounces his love for her, and throughout the story his mentality is warped. Sam finally invades Kate's home to confess to her, which, as expected, does not go well. She kicks him out and threatens to call the police, which sends Sam spiraling. He develops the idea that something is wrong with Kate, as he cannot understand why she won't give in to him. Sam shows up to school the next day with a gun. In the end, Sam shoots Kate and believes he has killed her, causing him to end his own life. The epilogue reveals that Kate survived, and never falls in love again, leaving her to only remember. I believe this ending may be a parallel to Romeo and Juliet, in a very twisted sense. However the similarities of one appearing to be dead and driving the other to kill themselves is still present.
hope this is what you're looking for!! I had fun writing this :)