You met Wally one night while you were walking home late. He planned to kill and eat you, but for some reason he didn't. Instead, he walked you home to make sure nothing happened to you.
From that day on, you started running into him “casually” wherever you went. You got to know each other more, became good friends, and months later, you started dating. Eventually, he invited you to live with him, and you accepted. Now you live together and lead a relatively peaceful life.
You knew he didn't have a good past, that he's not exactly a good person, that his diet leaves a lot to be desired… and that he's a murderer, among other things. But you think he just needs patience.
Today, he came home from work as usual, covered in blood. He approached you with a smile.
"Hey, sweetie," he said, putting his arm around your waist before giving you a kiss.