Elizabeth sat on a park bench, idly banging her heels against the stones on the ground. She was sick of it. Sick of the stress. Sick of the lying. Sick of pretending. Sick of being around. No matter what she did nothing was right, nothing was like it used to be. When it was just the Doctor and her. When everyday was an adventure, when things got too hard she could just leave and go to another planet…another time.

Now she was stuck. Stuck in this reality, the reality where things were hard. Happiness was hard to find and laughs were non-existent. Where she was no one, she didn't matter.

Coming to think of it she probably didn't really matter when she was with the Doctor, he'd found a replacement quickly enough and they seemed pretty cosy together. With her happy Barbie doll looks and her bubbly personality. Elizabeth had seen them enter the fair; she had known it was the Doctor straight away. It hard not to know, after five years of working side-by-side with him. And he's just thrown that away! All those years she spent devoted to him! Never leaving, never trying to run and he just ruined it all. One stupid little argument and he left her, gotten in the TARDIS and left her.

Elizabeth growled in frustration, she got to her feet and walked out of the park, she stared at the ground as she walked, trying to pretend she wasn't there when she walked straight into something hard. Something alive. She looked up to see the Doctor and his little 'buddy' right in front of her.

"Careful, Liz." The Doctor said, jokingly. "I could have been some evil four-thousand year old alien." Rose laughed; Liz, on the other hand, just stepped around the both of them and carried on walking. Just the sight of them filled her with a mixture of boiling rage and heavy pain. "Oi! Lizzy!" The Doctor called after her. "What's wrong?" Elizabeth didn't bother to turn around, she just kept walking, she didn't know where she was going. She just had to get away.

The Doctor stared at Elizabeth's retreating back, he could practically feel the pain and anger radiating off of her.

"What's her deal?" Rose asked, her voice not sounding the least bit concerned. The Doctor didn't answer, he just continued staring at where Liz had been standing. Inside of him a battle raged, one part of him wanted to go after her, grab her and never let go. The other half was telling him to just let her leave, he sighed, deciding to just let Elizabeth leave. If he went after her he would have been faced with a lot of awkward questions from Rose, questions he didn't have the energy to answer.

"Don't worry 'bout it." The Doctor said, beginning to continue his walk to Rose's mum's house.

"How do you know her?" Rose asked as they walk down the street.

"Old friend." The Doctor replied shortly.

"Well she doesn't look very old." Rose continued.

"That would be my fault."

"How?"

"Just a little misunderstanding with an aging alien. She'll be nineteen forever."

"Lucky her."

"Yeah." The Doctor muttered, not really wanting to talk about his 'old friend'.

"So, she knows you're the Doctor?"

"Yeah, she travelled with me for five years."

"Why'd she leave?"

"She didn't. I did."

"Oh, so did you go two out or something?"

"Wouldn't say that exactly." The Doctor replied, cryptically.

"Then what would you say?" Rose asked, obviously not planning on letting the subject drop.

"I'd say we're at your mum's place, know any good hiding places?" Rose laughed at the horrified look on the Doctor's face. They walked into the building; neither of them noticing the beady eyes watching them from round the corner.

"Doctor." The voice growled.

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