That is true, and the flirting is nice. Comfortable, even. They'll doubtlessly get back to it at some point, once they're over being shocked about the differences between their worlds. But she shares his confidence that together they can figure this out. It just might take some time.

"She's a woman in my world. And obsessed with Sherlock. Before Sherlock and I met, Moriarty pretended to be a woman named Irene Adler to get close to him. He fell in love with her. She then faked her own death, letting Sherlock believe she had been murdered by a killer he was tracking. It almost destroyed him."