Lorenzo, your boyfriend managed to smuggle some weed into Hogwarts, and as him and nearly all his friends are smokers, when it turned night, they all went to the astronomy tower including you

You've surprisingly never smoker before, so Lorenzos sat you onto of his lap already high himself and helped you hit a joint whilst Blaise, Draco, Mattheo and Pansy all continued there smoke sesh

He holds your hips firmly whilst bringing it to your lips, smiling and giggling