Madison

Madison finished tucking in the sheet around the couch cushion and stood up. "Sorry about kicking you out of bed."

"It's cool." Kurt flopped down onto his 'bed.' "We can have sex if you want to make it up to me."

Madison laughed rather than taking offense. "Does that line actually work on girls?"

Kurt shrugged. "Sometimes. You never know till you ask though."

"Uh huh." Madison shook her head. "Well, as tempting as the offer is, I'm going to go get settled in my own bed." She headed out of the living room, glancing back once to see Kurt pulling out his phone to play on. She didn't know why the other girls had warned her about Kurt. He was incorrigible to be sure, but he seemed more goofy than lecherous. Still, she wasn't really interested in him.

She paused as she passed a bedroom and heard a moan. Cracking the door slightly she peeked in. Zack lay on the bed with Chloe kneeling next to him. She was bobbing her head up and down his cock while he tangled his fingers in her hair. Lucky Chloe. Madison quickly closed the door, not wanting to be caught. When Brandon had first befriended Zack she immediately took a liking to him. All of Brandon's other friends were typical jocks, but Zack actually seemed to look at her as more than just Brandon's hot sister. They'd joke and have actual conversations about things. The only other boy she could talk to like that was Brandon.

"Brandon, what are you doing? You shouldn't see your sister when she's changing."

Madison froze outside Brandon and Ashley's door. What is Ashley talking about? Has Brandon been spying on me? She could only hear mumbled talking and put her ear against the door to try and hear better.

Brandon's voice became clearer. ""I think about you all the time. I've tried not to admit it, but it's true. I want my sister."

Holy shit. Madison's brain reeled. Is Ashley roleplaying as me for Brandon? And Brandon want's this?

"Oh Brandon," Ashley cooed. "Is this what you want to see? Your sister's naked body?"

Madison jerked away from the door and stumbled towards her room. She'd caught Brandon looking at her from time to time around the house but she'd never thought anything about it. Her mind went back to a couple weeks ago when they'd been watching a movie before bed. She'd only been wearing a t-shirt and panties. When she'd tossed her legs up onto his lap, Brandon had shifted and made some jokes then hurried off to bed. Was he turned on by me then?

She burst into her room and quickly closed the door. Heather was lying on her bed under her covers and had frozen when Madison burst in. Madison was too preoccupied with thoughts of Brandon to notice Heather's frustrated expression. "Hey Heather, can I ask you a question about you and Kurt?"

"If you want to fuck him, be my guest." Heather sounded angry. "I don't know why you'd want to, but leave me out of it."

Madison blinked at Heather, not understanding why the other girl was so upset. I can't deal with this and Brandon too. She quickly left the room and paused in the hallway outside Brandon and Ashley's door again. She could hear moans coming from behind it. Cautiously she cracked the door open and peeked in. From her angle she wasn't able to see much. Brandon was on top of Ashley, fucking like his life depended on it. Judging by Ashley's moans, she was clearly enjoying it. Madison just stared at them. Brandon is pretending he's fucking me. Madison knew she should be upset, but she couldn't turn away. She'd never had sex with anyone and now she was watching her brother fucking a pretend her. Her hand slid into her pants before she realized it. Watching my own brother is making me wet. Oh fuck, I'm as messed up as he is. She began to finger herself and wondered what it would be like to swap places with Ashley.

"Brandon....Brandon...I can't believe how good you feel. I don't care what anyone else thinks, I need my brother in my pussy." Ashley seemed to be speaking the words Madison was thinking.

Madison watched Brandon's body tense up and knew he was coming inside Ashley. Coming inside her via their roleplay.

"I'm coming, Mads. I'm coming inside you."

"Yes, Brandon," Ashley wrapped her legs tight around Brandon's back. "Fill your sister with your cum."

Madison bit her lip to keep from crying out her own pleasure. She was so close, but she didn't want either of them to see her so she quickly slipped back out into the hallway. With the door closed, she leaned against it and furiously tried to finish herself off.

"Just imagine when we fuck Madison for real." Ashley's voice sounded through the door.

FUCK! Madison covered her mouth with her free hand and came. Her body shook and she hoped Brandon and Ashley didn't hear the door rattling. Eventually she calmed and slipped her hand out of her pants. I just came watching my brother pretend to fuck me. She was in a daze as she walked back to her room. Opening the door it seemed Heather had gone to sleep so Madison quickly slipped into her own bed and tried to figure out how she would ever be able to look Brandon in the face again.