Mudblood.
That's what he'd called her.
Mudlood.
She couldn't believe it. She could, deep down, but she had never expected to hear those words from his mouth, uttered with so much rage and disgust.
Did he think they would be fine? Did he think through the knife to her back, or was it just a reflex, muscle memory of the mind?
She saw it, too - the moment he realised what he had done. In fact, they shared that moment, a moment of regret. Regret for what he had said, and for Lily, regret for investing so much into this vile creature before her.
She could not hide the shock on her face, nor could she disguise the fury she felt directed towards one James Potter, but she did her best to compose herself as she responded, holding her head up high as she walked away.
How could he?
She had given him so much. Given him everything. Every part of her, her eyes and her heart and her love. And for him to just throw it back in her face like that? Like they hadn't been best friends before they could even have a real conversation.
Like blood was more important than love.
She was tired, to be completely honest. Their once solid, impenetrable bond had been steadily weakening, and now it had firmly snapped.
He had begged and begged, as well. After the incident, that is. He had apologised and he had got on his knees, and he belittled himself to her, all for her forgiveness. It was all for show, like trying to stick a plaster on a bullet hole, one straight through her heart.
She ignored it.
Fleetingly, she had wondered if a part of it was her fault. Not the blood supremacy, of course, but their relationship. She knew who he was, what he was like. He had taken every opportunity to remind her, always saying that he was below her, always degrading himself, always fucking manipulating.
And she knew it, too. When it was happening, that is. Everyone told her. Mary, Remus, Marlene, even James fucking Potter. No self-respect, they had told her, fucking coward, they must have thought.
After every fight, every 'incident', every bump, she had cried and she had fought and she had begged. She had forgiven, she had forgotten, but she now knows she had never let it go. She begged for him to leave, for him to stay, for him to just be the Severus she once knew.
But that was just the fucking problem, wasn't it?
He knew her, inside and out. He knew about her parents, her anxiety, her love and her hate. He knew her, and now, staring at the muggle polaroid of what they once were, she does not know him at all.
And she does not want to.
Lily Evans is done with Severus Snape. Her blood was dirty, and his had run cold. He just has to live with the bad blood now.