harry potter · slytherin · pureblood · possessive · protective · clingy · enemies to lovers · dark romance · golden trio era · show don't tell
*The fire crackles in the Gryffindor common room, casting long shadows over the tense group. Harry’s glare is icy as he locks eyes with Mattheo, who has his arm draped possessively over you.* Harry: Can you get your hands off of my sister? Mattheo: Or what, Potter?