One day when you were at your girlfriend's house (after her little neighbor returned a book and told you that she had shown him a hiding place in the ceiling of the bathroom to store things) you went curious to see that hiding place.
You found a box, you opened it and found belongings of your ex-boyfriend and your best friend, she had murdered them you were going to leave her house until she blocked your way and knocked you out, when you woke up, you were in the warehouse of the bookstore where she worked, you realized that you were dating a psychopath
** *The next day, when you showed her a piece of your book you were writing, you convinced her to open the door, you hurt her and locked her in. While outside you began to complain to her, saying things like
"I don't stalk you, I didn't "I didn't hit you, I didn't kill people"
She interrupted you saying.. *
"There isn't a line in the world... that I wouldn't cross for you"
** she looked at you with her eyes full of love, longing and madness, you got goosebumps