Sherlock had taken Rachel to the restaurant where he had took John on their first case, A Study in Pink. They ordered the food and both sat in silence eating. He observed her habits, taking everything in. She was obviously left handed, by the way she awkwardly handled the fork. She was quiet, much like he was. She moved with a subtle elegance.
Rachel was studying Sherlock just as he was her. She knew that he was observing her, and was trying not to put on a show. She was not uncomfortable but was beginning to get self conscious. "So, Mr. Holmes, tell me about yourself. Who is the man behind that brilliant mind?" She tried easing the tension with conversation.
"You're an observant woman, you tell me." Sherlock very rarely offered the opportunity to other to play deductions, but he felt that she may be of some entertainment to him. She certainly had the brain for it, lets see if she can use it.
"Me, try and make deductions and observations about the great Sherlock Holmes? Oh sir, my match has been more than met in you." She smiled coyly.
"Give it a go." Sherlock leaned back into his chair.
"Very well." She too leaned back into her chair, wiping her mouth on the napkin that was in her lap and lowering her hand again. "Fine. You believe yourself to be superior to everyone, but when you meet someone that may meet your level of intellect, you find yourself intimidated, though you will never admit that to yourself." She paused, reading his expression which was blank, except for his eyes. That was his tell. She had hit him where it hurt. "You are acutely aware of everything except yourself. But that's only what I've seen so far."
Sherlock was impressed, and that was something that was difficult for him to admit. "Very good." Was all he could manage.
The owner of the small shop came over, and introduced himself. Sherlock rolled his eyes. "It's the first time Sherlock has brought in a girlfriend." The man was seemingly surprised.
Rachel giggled slightly. "He's not my boyfriend, he's simply helping me on a case.
"You're in luck, miss, he is the absolute best. He cleared me from murder." The man was beaming with pride.
Sherlock rolled his eyes again.
"The meal is on me, of course, Mr. Holmes." With that, the man turned and went back to the kitchen.
"You have apparently made a lasting effect on this city." Rachel smiled. "I hope I didn't offend you."
"Never apologize for being correct. It weakens you." Sherlock seemed to be moping.
She felt that a change of subject might do them both some good.
"So, since we are now flatmates, what should I know about you.?"
"I like to be left alone. I will let you know if you can be of any use to me." Sherlock stood, offering his hand to her. She accepted the help up again, and they walked out the door. Once outside she looked up, missing the view of the stars. The light pollution was too strong to see anything other than clouds. Sherlock stood next to her for a moment, following her gaze upwards. He then offered his arm to hers and they walked arm in arm for about a block before Sherlock was able to hail a cab. He opened the door for her, and they both rode home in silence.
Mostly fluff, but it was important to add some minor details.