In my mind 10.2 would still go by "Doctor" but since it might get confusing calling them both Doctor, I have called 10.2 by my own head cannon name for him: Jason (meaning healer) Theta (for his childhood nickname) Noble (for Donna).
Thanks for reading!

Rose and her Doctor (officially named Jason Theta Noble in this universe) sat on the couch watching a movie. His fingers were threaded through hers as she snuggled up next to him, happy for the chance to finally have a quiet afternoon. They had spent most of the past few weeks on a Torchwood mission which had taken them to three different continents pursuing a hostile alien. In the end, they had captured the alien and sent him back to his home planet for trial. Unfortunately, the capture came after the death of three civilians and two Torchwood operatives.

Any time something went wrong and lives were lost, Jason blamed himself. It didn't matter who was leading the mission or why things went wrong, he put the mistakes on his own shoulders. The loss put him in a dark mood, which he took days to shake off.

He tried to relax and be present with Rose. He knew that there was no way he could have prevented the loss of life. The logical part of his mind kept telling him this, but logic was harder to listen to when he now had human emotions getting in the way. He absently ran his thumb over Rose's knuckles trying to let the feel of her hand ground him.

Glancing over at her, he saw the way the sunlight reflected off of her hair, bathing her in a golden light. She mourned the loss of life too, but she had a way of moving on, something he struggled to do. He asked her once how she could move on and she had told him that she just reminded herself that although they had lost a few lives, they had saved so many more. It made sense, of course, but he found it impossible to think that way. Perhaps it was because of the centuries of guilt that he carried with him always. Maybe it was the blood already on his hands, or the screams of the children and tears of their mothers that haunted his dreams every night.

Jason sighed and shifted closer to Rose. Everything in his body ached to run, to keep going and never stop. But she was his anchor, the one constant that kept him grounded. He had made her a promise, given her his one frail human heart. And for once he intended to do something right.

The movie was only half way done when they heard an alarm coming from their room. Months ago Jason had put together a machine that detected any new alien activity within 100 kilometers from their flat. As the alarm sounded, Rose groaned while Jason jumped up.

"Let someone else deal with it, yeah?" Rose pleaded. "We are off duty today."

Jason stopped in the middle of the room. She could tell that he was torn. He stood glancing at her and then back towards their room. He did not want to disappoint Rose. He knew he should just stay with her, enjoy their time, let someone else deal with things for a change. But he couldn't do that. He had a responsibility, and (if he was completely honest with himself) he loved the thrill associated with a new alien threat.

"I'll just…" he stuttered, "won't take me… I've got to… I'll be right back."

He darted out of the room, and Rose shook her head. She knew he couldn't sit down and relax thinking that someone else might be having an adventure without him. It drove her mad, but she also knew this was a part of his personality that had originally drawn her to him. She sighed and got up to follow him into the other room.

When she entered the room, he was sitting at the computer rapidly typing in commands and shaking his head. Rose looked over his shoulder trying to understand what he was seeing, but all she saw was the swirling language of his past. She had asked him once why he used Gallifreyan for the program instead of English, and he had explained that it kept it safe from prying eyes since he was the only speaker of Gallifreyan in this entire universe. Of course that made sense to her, but it also frustrated her no end during times like this.

"No no no no no," Jason muttered before slamming his palms on the desk.

Suddenly he jumped up, pulling on his hair and pacing around the room. He continued to mutter but Rose wasn't even sure if it was English anymore.

"Doctor, what is it?" she questioned, fear rising up in her with every step that he took.

He finally seemed to recognize her presence and turned to look at her. His eyes were like black flames. The emotions flicked through them so quickly that she could not even discern what they were, but the one that seemed prevalent, the one that settled in his face, was dread.

"Doctor?" she whispered.

He opened and closed his mouth a few times before finally answering in a barely audible voice, "it's me."