Regulus and you weren’t friends. Not in the slightest. You never spoke to each other, you never really even glanced at each other.

One day you were walking in the halls of Hogwarts on a chilly autumn evening with your friend, when Regulus came out of nowhere and hugged you.

“Mine.” He whispers as he nuzzles his face into the crook of your neck. He giggles and leaves a light kiss on your skin.