A/N: This collection of one-shots is for cherryredxx's Fifty Days, Fifty Songs Competition. Each one-shot is inspired by a song.

Song One – Somebody That I Used To Know by Gotye

Lily Potter thought that she would be sadder when her boyfriend of four and a half years, Liam Finnigan, said that he wanted to end things between them and just stay friends. In fact, she was surprised to find herself agreeing with him. They had been together since near the end of their fourth year, when Lily had just turned fifteen. Now they were both nineteen, and they hadn't been seeing each other as often. Lily still loved him, of course, but she had discovered that it was more of a sisterly love instead of a romantic love. She wondered whether it had been that way all along and she was just too thick-headed to realize it.

Now it had been three and a half weeks since their relatively painless break-up. Lily had sent him a letter asking if he'd like to meet up for dinner sometime in Diagon Alley – as friends, of course – but her owl had returned with her unopened letter. This wasn't like Liam at all. She had tried visiting his house the week later, but no one answered the door (although she could have sworn that she heard noises from upstairs). Whatever Liam had said about staying friends, he certainly hadn't meant that if he was going to keep acting this way.

Sighing, Lily knocked on Liam's door for the second time that week. She thought he could hear his muffled "Damn it!" from upstairs, then some quiet mumbling. After a few long minutes, the door opened.

"Liam told me to tell you that he's not here," Thomas Goldstein said, absentmindedly running a hand through his messy jet-black hair.

"So he is here," Lily said.

"Not according to him, he isn't," Thomas cheerfully remarked.

Lily rolled her eyes in impatience. None of his was like Liam at all. "Well, would you please tell him that all I want to do is talk to him?"

Thomas bit his lip. "He really doesn't want to talk to you," he said sadly. "He told me what happened, and...he doesn't want to see you anymore. At all."

Lily almost laughed. Liam was the one who decided that he wanted their relationship to end and "just be friends", and now he was acting like she'd cheated on him and dumped him or something. If anyone deserved to be acting like this, it certainly wasn't him.

"So I'm supposed to act like the past four and a half years never happened between us and just act like I don't know him at all?" Lily asked, incredulous. "Is that what he wants?"

Thomas shrugged. "I'm not psychic. How am I supposed to know?"

Lily laughed. It was the first time that she'd laughed in three and a half weeks. Tommy was the opposite of Liam – studious and thoughtful, but still friendly, and funny without even trying. Maybe the whole relationship with Liam had failed because he was too much like her – reckless, talkative, and excitable. Maybe a bit of change was all that she needed.

"Well, I was going to give Liam this offer…" Lily slowly started to say. "But seeing as he's 'not here' at the moment, I guess he'll have to miss out. Would you like to come to dinner in Diagon Alley with me, Thomas?"

Thomas raised a quizzical eyebrow. "Would I be there as a friend or as a date?"

"Whichever you'd prefer," Lily said.

Thomas smiled. "Liam!" he yelled up the stairs. "I know you're not here, but even so, I thought you'd like to know that I'm going to dinner with Lily." Now he and Lily were both holding in laughter. She heard a groan from upstairs.

"And," Thomas said to Lily, "It's Tom, not Thomas. Thomas is what teachers called me."

Lily smiled. "Tom it is, then."

As they Apparated towards Diagon Alley, Lily thought that if Liam wanted to ignore him and pretend that they'd never met, she was fine with him being just somebody that she used to know. With Thomas, on the other hand, things would be different. She could already tell.