Shattered (Antisepticeye x Reader)

You work in a mansion. You clean floors and dishes and bedrooms. There's nothing special about you. You were hired by a gentleman named Mark, he's always been a secretive man, always going on business trips, or having meeting in the dining.
Of course, in a mansion like this, you need at least SOMEONE to keep you company. His name is Sean. He's home less than Mark, he only comes for food or a quick rest, and then he's out again. All you know is that he's a disloyal man, and a slob.
One day, you encounter Sean, and sure enough, he's as flirtatious as ever. But maybe there's a little something different about him, something under the skin. What is it?