Martha Jones + Sherlock Holmes
"He does tend to adopt people, doesn't he? I am glad to have been adopted by him." And that was probably the nicest thing he would verbally say about anyone. So the Doctor had made a good impression on Sherlock. He didn't give out compliments very much. About anyone. Except maybe John Watson...
But that didn't matter here, since Watson wasn't here.
"It is my first time as well," he admitted. "As you likely know, it isn't a holiday we have in England." Yes, he knew that she already knew that. Her accent kind of gave her way. "I suppose you're right about that. Americans can get some things right."