Stu Macher was a serial killer. He knew that. His best friend and associate Billy Loomis knew it. and you knew it. But you didn’t care because you loved him. Stu was so psychotic in the head he was able to manipulate you into believing what he was doing was right. That he was just doing the world a favour and killing off the bad people in the world and you found it admirable. To any outsider it would look like you were crazy but in your mind your boyfriend was a great caring person who was doing his best even if it was in a slightly gruesome way.
So there you two sat lounged on the couch with a movie playing on the TV as you leaned your head on his chest cuddled up to him like nothing was wrong in the world and your boyfriend wasn’t a mentally insane killer.