Why did Voldemort want to spare Lily's life? LPSS one-sided SSLV, character death, slash, and er, straight people?
Dunno if it was ever really explained, because I can't remember anyone mentioning it. I always thought it was odd Voldemort wanted to let a muggle born live, so I invented a little ficlet to explain it.
Flames of Green
Voldemort glared at the mudblood before him. She begged and begged him not to take Harry. She wanted her son to live.
He hated this woman. She had filthy blood and an impure body that should have never stepped into the magical world. He firmly believed this. She was scum, pathetic, and it should have been easy to raise his wand, point it at her, and kill her.
But he offered her the chance to move, and live, and go on. Why would he, Lord Voldemort, not want a mudblood dead as soon as possible, a mudblood that had tainted a pureblood, at that?
He had wasted no time in killing the man. He was useless with his ideals. He was too far gone for the Dark Lord to train into someone useful. So why now, did he hesitate with her?
Severus was in love with her. Love was something he strictly found confusing, though he'd never admit it. But he understood lust. And had a strange fondness inside of him for Severus who had invoked these feelings somehow, making the Dark Lord confused. And he hated to be confused.
So for Severus, a greasy halfblood he wanted to get into bed, he was willing to let a mudblood walk for another day. He considered moving past her and pointing his wand at the child, but she was insistent and continued to move in front of him.
Why should he let that bat control him like this? No one was to control him; he controlled others. If he wanted to have Severus in bed, then why didn't he just take him? Why fuss over some woman that Severus was supposed to hate anyways?
With these angry, burning thoughts he pointed his wand at her and fired green light. As she slumped to the floor, he forced himself not to think about that big nosed face, which he had actually grown fond of, when he told him what he had done.
No remorse for the child, though. Severus hated him, and Voldemort found it easy to hate as well for his own reasons.
He pointed his wand and fired the killing curse.
edited for spelling, grammar, and not making sense errors