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The Sound Of A Nightingale. Gwen/Martha.
She knows she shouldn't be thinking about her the way she is and has been ever since she first saw her; she knows she definitely shouldn't be watching her like she is. She's learnt everything she can from simply watching her, and now she wants more. She wants to smell, feel, touch and even taste her. She wants to know what it would be like to wake up and feel her breath on the back of her neck. She wants to know that she can wake up with her every day for the rest of their lives. She loves her even though she knows she shouldn't. She knows that she will never love her back, she's married, happily so as far as anyone knows. She knows she's going to end up hurt, but something's telling her to wait, that Gwen's different from the Doctor.
So here she is, sitting in Gwen's flat watching her make tea in the kitchen. Paying careful attention to the small strip of skin she shows as she reaches for the mugs, and the way she taps the counter impatiently when the kettle doesn't quite boil fast enough. She wants nothing more than to sneak up behind her at the counter, cover her tapping hand with her own and pull her back against her with her other arm to nuzzle the soft skin of her neck. But she can't. So she just waits patiently and takes her eyes off of Gwen to look around the living room instead. The pictures of Gwen and Rhys covering nearly every wall and surface start to make her feel wrong and awkward about dropping in. But she just couldn't stand being away from Gwen any longer, she'd missed her a lot since she first came to Cardiff for the Reset medical trial case.
Gwen finished making the tea and turned to walk into the living room when she saw Martha gazing off into the corner of the room. She put the mugs down on the coffee table and sat beside her slowly. She placed one hand on Martha's shoulder and whispered slightly so as not to scare her, "Martha, are you sure your okay?" Even though Gwen whispered, and Martha had felt her hand on her shoulder before she spoke, she still jumped slightly.
"Uh, yeah I'm fine. Thanks." She replied with a slight tremble in her voice.
"You don't sound fine. Has something happened?" Gwen kept her hand on Martha's shoulder for a few seconds more, before running her hand down her arm lightly and placing it over hers. "You can talk to me, you know. I know we aren't exactly friends, but we could be if you wanted."
Martha glanced up just as Gwen flashed her a small smile. "I'm ok, really. Do you want to get a drink or something?"
Gwen looked at Martha carefully for a few seconds; she wondered what could be upsetting the strong woman she had met for the first time in the Torchwood hub. Deciding Martha might feel more up to talking after a few drinks; she smiled at her again and pulled her up and out of the flat.