Prompt: Marlene accidentally walking in on Lucissa in bed.

Pairings: Marlene/Lucius, Narcissa/Lucius

Note: This takes place in my RolePlay universe and all characterisations are based of those from the RP :) A bit of background - Lucius and Marlene fooled around before his engagement to Narcissa became official, so Marlene and Lucius are secretly together in this fic.

Anger, hurt, jealousy, and shock all swirled in Marlene like a storm as she observed the scene before her. Rosier had let her in, with a satisfied smirk on his face which should have been enough to set off the alarm bells for Marlene, but for some reason didn't. She was in the Sytherin dorm, intending to return Lucius's shirt which he had left because she'd been wearing it last time they slept together. She hadn't been expecting anyone to be in the dorm, she just wanted to leave the shirt and go. She hadn't been expecting to find Narcissa in Lucius's bed, curled up against him, both clearly naked. It wasn't hard to figure out what had just happened.

Narcissa smiled cattily at the look on Marlene's face. "Hello, Marlene," she said sweetly, cuddling closer to Lucius. "Lucius is rather busy, at the moment. He doesn't need you anymore, as you can see." Marlene knew she was referring to the sort of lie that Lucius had told her that he was only using Marlene for sex, and she saw red.

"I was just returning his shirt, actually Cissa," Marlene smiled back, just as sweetly feeling the anger and jealousy rise up in her. "He left it in my dorm the other night, and I thought he might want it back. It's very comfortable, if I do say so myself. So is his bed, but I guess you know that now."

The smug look on Cissa's face faltered ever so slightly but she quickly schooled her face. Lucius had shifted away from Cissa, looking uncomfortable and not meeting Marlene's eyes, but he said nothing. The hurt flared up and Marlene schooled her face as to hide it. Lucius saying nothing hurt more than anything else he could have done, it was another blow to Marlene's pride. Now that Cissa was sleeping with him, he had no legitimate reason to be with Marlene anymore, and his silence spoke volumes. He was choosing Cissa over her. This was the inevitable break up, and Marlene wanted to cry. Flashing Narcissa a smirk full of confidence she didn't feel, she dropped the shirt and strutted out of the room with the tattered remains of her dignity.

She didn't get far, before a hand grabbed her wrist and spun her around. Lucius.

"I'm sorry," he said quietly. Angrily she tried to shake off his grip, but he was stronger than her and he hadn't finished speaking yet. "Look, you knew this was going to happen. I didn't want you to find out about it like this, I was going to find you tonight and tell you."

Marlene listened to him talk, pure, unadulterated anger and hurt shone on her face causing him to wince slightly. Once he was done, her hand immediately came into contact with his cheek as she slapped him, hard, her nails leaving a series of scratches on his cheek. He instantly dropped her arm to lift his hand to his cheek, staring at her violent reaction in shock. "Fuck you, Malfoy," she spat. "When you get bored of playing happy families with Cissa, don't come crawling back to me because I won't be around."

His face immediately hardened into a sneer at her words, ignoring the hurt he felt at her words. "Why would I ever come crawling back to you, McKinnon? You were nothing but a good shag anyway."

With that, he turned and strutted off back to Cissa, leaving Marlene standing there squeezing her eyes shut to hold back the tears.