Yandere Boyfriend (Y/N story)

It was late at night and you snuck out the window to wander in the forest as you usually do, but you won't get lost, you memorized the map but at every step you take you seem to notice someone's looking at you but you choose to shrug the feeling off. As you were walking you stumbled upon an abandoned building. You should be scared of what might come up to you but you feel like you're safe in here. You went inside the building, and old wall parts and rusty metal where scattered around the floor, seems like this was used as a war place. You noticed stairs for the second floor, you didn't think twice then gone to the second floor. The place was dark so you grab your flashlight as a shadow of a tall man coming close to you. You began to feel nervous. You were going to run but then one arm wrapped around your hips and a hand with a handkerchief on it placed in your mouth. You were soon to struggle but you became weak and everything went black...