A/N: This idea came to me since I've always wondered what Riley's home life is like, and since the writers don't give much insight, I've come up with what I think it's like. Read and enjoy!

Disclaimer: I own nothing.

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Peter and Riley were walking from school to Riley's house and Riley was growing more nervous with every step. It was rare that he would let anyone even see where he lived, considering it wasn't exactly a wonderful place. It was just a tiny apartment. But this was Peter and he just hoped that he wouldn't judge him for it.

Walking up the stairs to the place, Riley refused to meet Peter's eyes. Opening the door, his fear was replaced by something else entirely.

"What are you doing here?" he asked.

"It's the living room and I am living," a petite blonde answered back.

"You said you were going to go out with your friends. Because apparently you somehow have friends," he explained.

Ignoring the last part of his statement, she answered, "I am. Later. I'm getting my fourth belly button piercing. What color should I get it, green or silver?"

"Who are you?" Peter asked, extremely confused.

"You're right, silver's too bland. I'll have to go with green," she murmured to herself. Then, in response to his question, she answered, "I'm Lindsey. Professional annoyer of him." She motioned towards Riley. "Or you can just call me his little sister."

Peter turned to Riley, "You have a little sister?" he asked.

"Yes, one who's supposed to be gone right now," Riley responded with an irritated look directed at Lindsey.

"It's my house too and you can't tell me what to do," she said, "The only one who can tell me what to do is mom, and she's never home."

"Did she leave a note?" Riley asked.

"Yeah," she started, turning to grab the note in question, then turned around and read, "'Riley and Linds'- see, she doesn't even have the courtesy to write my full name. Ooh, she can write your name, it has five letters, but seven letters are too exhausting to write- anywho, 'Riley and Linds, Out on date, find food.'"

"Charming," Riley said, rolling his eyes.

"This mac and cheese is going to go bad if we don't eat it now," she told him.

"I'll have some later," Riley mumbled.

"Oh yeah, I forgot. You can't eat in front of people," she said, clearly mocking him.

"Shut up!" he yelled, throwing a pillow at her.

Ignoring this, she turned to Peter and said, "It's because he eats so much. It embarrasses him. Like one time, we bought two pizzas and I turned around to get a paper plate and when I looked back, they were gone. Then I looked over at him and he had both boxes and had already eaten, like, half the pizza."

Riley flushed red and said, "When are you going to get groceries, It's your turn."

"Soon. I just got money from dad," she told him.

"You still take money from him?" Riley said with a dark look on his face.

"Just because you hate him doesn't mean I have to."

"He left us!" Riley reminded her.

"He's getting better. He's been sober for six years!"

"It's different. You were eight when he left. You can't remember. I was eleven, so I do," he told her.

"You're just too stubborn for your own good," she mumbled.

"Look, can you just leave us alone?" he pleaded.

"Why, so you can make out with your boyfriend?" she teased sarcastically.

Both boy's faces paled, "He's not my boyfriend!" they yelled.

"Okay, geez. I was just kidding," she said defensively, throwing her hands in the air, "Besides, you won't even know I'm here. I'll just be sitting here on the ledge in the kitchen."

Realizing this was the best reaction he was going to get out of her, Riley left it at that and just tried to ignore her. Eventually, Peter had to go home and as soon as the door shut, Riley was running to his room to clear his head.

A/N: So there's the first chapter! Please review!