Lily Evans and James Potter:
"Follow me, everyone!" someone was saying, "Gryffindors this way!" Most everyone from the Gryffindor table got up and began to follow the boy.
But Lily Evans hung back. She looked toward the Slytherins moving in the opposite direction until she found a pale, skinny, black-haired boy.
"Sev!" she called. She ran to him.
"Sev! I can't believe they put us in different houses! But it's still okay though, right? I mean, we'll have classes together and we can still talk to each other and-"
"Lily, I-" the boy began.
"Oh Severus! I can't believe it! You know I'd much rather be in Slytherin with you!"
"Oi!" another dark-haired boy said, he had come up behind Lily and Severus unexpectedly. His wire rimmed glasses were crooked and his hair seemed in a permanent state of disarray.
"What kind of Gryffindor wants to be in Slytherin?" he scrutinized Lily.
"Go away!" she said, "We don't want to talk to you!"
James Potter looked over her shoulder and gazed at the boy behind her.
"Hey I remember you, Snivellus!" he chuckled. "Guess you got what you wanted! Got to be in Slytherin! Too bad your girlfriend here couldn't join you." He guffawed at his own supreme joke.
But Lily wasn't laughing. In fact, she was livid.
"You better stop!" she said, her face turning as red as her hair.
"Make me!" James replied, crossing his arms at her.
"Stop or I'll - I'll -I'll do something to you!" She pulled out her wand and pointed it right at James's nose.
For the first time, James showed some apprehension.
"E-Easy there," he tried to push the wand away from his face, but Lily stayed firm. "You don't know what you're doing with that! Somebody could get hurt! Do you even know any spells?"
"No." she replied.
He smiled, "Well you can't do magic without spells!" He nudged the wand away again, just to be brought back up to his face.
"I've done loads of magic!" Lily argued, "And I didn't use any spells!"
James rolled his eyes. "That's nothing! The magic you do when you're little is just bits of it. Then we come here, so we learn spells that help us do real magic, like your parents do."
"My parents can't do magic." Lily said, lowering her wand. Severus groaned behind her.
"They can't do magic?" asked a confused James, but soon his eyes lit up with realization and another smile broke across his face. Severus just groaned again.
"You must be Muggle-born!" James said. "That explains it!" He mocked hitting himself in the head, but Lily didn't laugh.
James looked over her shoulder and glared at Severus. "What are you doing talking to a Slytherin?" he asked, "Don't you know that Slytherins don't like Muggle-borns like you? No, they only like pure-bloods, people with an all wizard family."
Severus had his hands buried in his face, but Lily continued in angry defiance.
"I know you're lying." she said, "Severus says that Muggle-borns are just like everyone else, and besides, if you were telling the truth, how did he get into Slytherin when he as a Muggle father?" She crossed her arms, convinced she'd won the argument.
James laughed. "You think that I'm the one lying?" James snickered in Severus's direction. "First of all, Slytherin doesn't care much about half-bloods, you know, people with Muggle and magic blood in them." Lily narrowed her eyes. "And second, he lied to you about Muggle-borns being the same as everyone else. Lots of nasty wizards say that Muggle-borns shouldn't have magic. They say that they got dirty blood."
Lily did nothing.
"Not me, though!" James smiled, "I don't believe a word of it! My dad says that there are Muggle-borns with twice the magic that most pure-bloods have! And I bet your friend, Snivellus, knew all about that."
Lily turned to Severus. "Is that true?"
Severus nodded miserably.
James chuckled. "Its all right, though." he said, "Why don't you talk to someone with some real manners?" He held out an arm and flashed a smile.
"Get away from me, you horrible boy! C'mon Sev!" Lily grabbed Severus by the arm and began to drag him away.
"N-No! Wait! You're going the wrong way!" James ran after them.
"Lily," Severus said, "You've gotta go back to your house."
Lily paused, then turned around and glared at James Potter.
"Fine." she said, "I'll go, but I'm certainly not going with you!" She began to walk towards the place where the rest of the scarlet-robed people were headed.
"Wait, Lily!" Severus called after her. He jogged to catch up. "Lily, you-you're not mad at me are you?" He looked sheepish.
Lily frowned. "No, I'm not mad. I'd never be mad at you, Sev. We're best friends forever, remember?" She gave a fleeting smile as she hurried to catch up with Gryffindors disappearing down the corridor.
Severus Snape walked back to his own common room, alone, but happy that Lily wasn't too angry with him. After all, she was his best friend forever.