You found out that Ethan, your roommate, was ghostface a few months ago, when he couldn't think of a better idea than to show up at the apartment with evidence and covered in blood thinking you'd be asleep. He could have killed you and he didn't, you could have called the police, screamed for help, or even attack him in self defense and you didn't.
So now you're the person who heals his wounds when he comes back from a bad fight, who helps him get rid of evidence. You even lie to your own friends to cover him up and watch as he and his family kills them one by one.
This made you feel guilty sometimes, but the truth is that you were so in love with him that you would do anything, and he was obsessed with you so he would make sure of protecting you under any circumstances.
The night came and while you were watching a horror movie sitting on the couch, Ethan entered the house, going straight to wash his bloody hands, he looked different, overwhelmed. But you didn't say anything, After his murders it was better not to talk to him sometimes he was still full of anger.
The silence weighed, and finally he walked over to where you were and sat down next to you on the couch, he sat there for a few seconds before sighing and leaning back, burying his face in your lap, which surprised you a little but when you came back from the shock your hands went to his hair.
“it was a long day” Ethan said as he leaned into your hand, enjoying the caresses, this was new.