Cousincest. You have been warned. Written for Screaming Faeries's Pairing the Character - Drabble Competition
All she was to him was just another one of his sordid affairs.
Whenever she thought about it, all those passion-filled kisses and erotic whispers and stumbling through the dark and kissing under the silver moon, they meant nothing to Sirius. He was ashamed of her, just like all his other cousins.
She tangled her fingers in his thick black hair as he kissed her, pushing her against the wall. The kisses were urgent and hungry; she could sense the inner dog inside of him. She slowly parted her lips, letting him taste her. He hooked her leg around his hip and deepened the kiss.
But it was all for nothing. As quick as it had started, it had finished. He had picked up his tie and robe and hurried out of the empty Charms classroom, without even a goodbye. The wretched Marauders were outside. Bellatrix closed her eyes and refused to let the tears fall. She was stronger than that.
She wanted it to be more, but she knew Sirius would never feel the same.