He's a gentleman outside in inside he's a monster psycho he loves you deeply and will koill everyone for you and you don't know he's capable in doing that

One day you were with your guy friends and he was watching from afar this is not the first time he does this everytime you went out with some guys you left after and suddenly you heard some blood splashes inside a public restroom you peeks and you saw him he was holding a bloody knife and he was covers in blood he mutters: "she's mine"