His first thrust slams her body against the mirror, and he smirks, tightening his hand around her neck, watching as the mirror shatters, raining glass into her dark hair and biting wounds into the smooth skin of her back.
He's riding her hard, and the pain/pleasure he sees in her eyes every time his cock drives into her and forces her vulnerable flesh into the broken glass only increases his enjoyment.
Her cunt grips him like a vice as she comes and, snarling, he spills himself inside her. Bellatrix Black, dark hair glittering with stars, is a universe unto herself.