"Because you're mine, from now on you belong to me. Understood?" "Wha- what do you mea-" "Understood, Harry?" "Yes." "Yes what" "Yes sir." Or the one where Harry is a party boy until he meets Louis, who instantly feels the need to dominate him. But Louis is not who he appears to be... (just light bdsm)

"Who's the weird boy?" "You'd better not talk about him like that." "Why not?" "See that guy over there?" "Yeah. What's he got to do with-" "That's his boyfriend, Louis." "Okay, so?" "If he hears you talk about Harry like that.." "He'll what?" "He'll kill you."