A/N: I was originally going to take some liberty with the Post-Deathly-Hallows genealogy, but then I decided to not really do it, but I might still do it on accident, so to make a long story short, most of this will be in accordance with JK Rowling's universe but if I get a detail wrong, don't tell me. I probably don't care. I've done my research (I even just re-read Deathly Hollows yesterday, great book!) so it's close enough to make the story work :P
The girl started when he moved from the shadows. There was moonlight streaming in from the window, and though it illuminated a white strip across the empty classroom floor, the edges of the room remained blanketed in complete darkness. She had no way of knowing how long he had been waiting there, and she knew that there was no way anyone was going to find them here in the middle of the night. As he stepped forward slowly into the beam of light, it reflected off of his platinum blond hair, currently long enough to be pulled back into a ponytail tied at the base of his neck. His face was rather pointed, but handsome, and his deep blue eyes sparkled in the light. His face was still as stone, no hint of emotion nor life showing but for his eyes.
"Funny how the moon makes everything white. Even your Weasley hair looks blond."
"My grandmother had hair this color, too," the girl said quietly.
"Lily Potter. Your namesake."
Lily snorted. "Cut the crap, Malfoy, you antagonistic ass."
"Brave stuff, coming from a fifth year." He was standing right in front of her now. "And your brother Alby isn't even here to save you."
"And you're way too cocky for someone who's not got the balls to come out and tell his family-"
It was then that Scorpius Malfoy cut off Lily Potter by pulling her to him and kissing her square on the mouth. She responded by throwing her arms around his neck, where they remained for some number of minutes before finally she pulled away, still glaring at him slightly.
"Dear Dad," Malfoy started, "Son of the greatest pureblood-arrogant family to have risen to power when Voldemort ran his reign of terror-"
Lily was rolling her eyes.
"-except for maybe that bitch Bellatrix The Strange, sworn lifetime nemesis and rival of Harry Potter, the Boy Who Lived and Defeated Aforementioned Villain Lord Voldemort -"
"Scorpius," Lily sighed.
"I just so happen to have a clandestine Romeo-and-Juliet love affair with the daughter of said mudblood-by-grandparents nemesis-rival and the blood traitor Weasley clan, who have assisted in our family's downfall and shaming. Don't hate me. Sincerely, Scorpius Hyperion Malfoy."
"Excuse me?" Lily's eyes blazed. Scorpius gazed at her sadly.
"You know I'm not like them."
"So why not disown them, you're of age?"
"Lily, they're my family. I can't do that."
"Even if they're-"
"Funny, I was going to say evil."
"My parents are not evil."
"What's gotten into you, lately?"
"What's gotten into me?" Lilly stepped back from Scorpius. "How about the fact that you're so ashamed of me that you won't even tell anyone we're dating?"
"We've been over this, Lily, it's not shame."
"You just can't mar your good name by telling anyone you're dating a traitorous mudblood."
The moment was marked by silence as they stared each other down. They both knew they were walking dangerous territory, and though they both wanted to have their say, neither wanted to make problems worse. It was Scorpius who cracked first.
"Do you know what we're doing?"
"No, do enlighten me."
"We're living our parent's lives." Lily looked at him suspiciously.
"Do go on."
"All we ever talk about when we have this argument is the fact that your father is The Boy Who Lived, the Chosen One, and my family is a bunch of Bloodist arsewipes who were his enemies and the allies of the Dark Lord he fought."
"So if you were just some girl I met at school, and I was just some boy you met at school, and our families didn't hate each other..."
"But they do, Scorpius." Lily said softly. "They do."
"And we can't change that."
"I can't change the fact that I come from a mudblood and a blood traitor."
"And I can't change the fact that it matters to my parents, just like I can't change the fact that they are my parents."
"And I can't change the fact that my parents hate your parents."
"But I don't care, Lily. My parents are my parents and that's that, but I am not like them. I have nothing against your family, I have nothing against your blood, I have nothing against you." He put his arms around her, resting his cheek on the top of her head as she wrapped her arms around his waist. He sighed.
"And as long as that's true, my parents shouldn't have anything against you."
"So..." Draco trailed off.
"So..." Lily looked up at him. "So?"
"I'd rather not be there when your family finds out."
"Erm... perhaps, given the situation, letters would be best..."
"Well my family is coming for a visit soon," Lily said, biting her bottom lip. "They'll be staying in Hogsmeade. We could go - Oh, all right, I could go - you know, and... well, I'm already going to be seeing them anyway, so it wouldn't hurt..."
"Why are they coming?"
"I don't know," Lily said. "I think they want to be closer to the school, because, you know... the battle..."
"It was here."
"Right. And it was home for Dad when he was growing up, and what with everything that's going on in the east..." Malfoy stepped back, placing his hands on Lily's shoulders and looking down into her eyes, his face still and serious.
"They don't think it's going to make it all the way over here, do they?"
"Well, you know, people are talking and-"
"Ugh, Lily, seriously. People talk about a lot of things that aren't necessarily true."
"I know, but Luxembourg, Scorpius, they're saying they've got spies as far as Luxembourg."
"That's ridiculous, Lily, and you know it."
"I know. I'm just... worried."
Lily sighed, looking out the window into the sky. When she spoke, she spoke softly.
"When the Muggles fought their war in the beginning of the last century, there was bitterness. There was anger. Even when the war was over, Europe was... changed. It was different. And then there was a backlash that started another war. It's like a tsunami... the wave never hits just once."
"This isn't a tsunami," he said gently. "This is a scuffle from the east. It will not come here." He placed his hand under her chin and turned her back to face him. He looked into her eyes, trying to reassure her. "It won't."
"Oh, Scorpius, I know I'm making a fool of myself, but I just can't... I can't shake this feeling that I have."
"Oh, do you finally have the sense to be disgusted by me?"
"No, silly. But... I can't help but feel like this isn't really peace. It feels like the calm before the storm."