A/N: My first attempt at writing legitimate Johnlock (as opposed to implied). I'm a little apprehensive about my portrayal of Sherlock, but...Hey, it's fiction. And I mostly write these for my own personal enjoyment.
Disclaimer: I do not own Sherlock Holmes, John Watson, or any of the other characters associated with them.
When John Watson realized that he was essentially in an actual relationship with Sherlock Holmes (and that realization hadn't surprised him as much as he would have guessed – he supposed he'd known for a while), once the initial shock had worn off (Sherlock pulling him into an alley and snogging him senseless after a case had admittedly been a surprise), he figured that not much would change. Sherlock was still Sherlock, things at 221B would continue as they had always done, and John could be content with that. He did expect Sherlock to be less acknowledging of his personal space than ever, and the consulting detective might be even more needy than before, but John found himself not really minding this idea. Because Sherlock was his now and he would gladly deal with the idiosyncrasies in their relationship for Sherlock's sake.
One thing that John was not expecting was…Actually, there were a lot of things he wasn't expecting. But the surprises were far from unpleasant.
After the kiss – and the subsequent explanation, which had basically amounted to John asking, "What the hell was that for?" and Sherlock replying, "Don't be obtuse, John. Such displays of affection are common when one is in a romantic relationship," and that was it – in the alleyway they continued home to Baker Street. Neither said much. Sherlock was in a pensive mood, and John was still more than a little stunned. So stunned that he was only half-aware of Sherlock's hand tentatively brushing against his own.
A second later Sherlock's gloved hand slipped into John's, fingers interlacing in a perfect fit. John was only momentarily surprised that his first instinct was not to withdraw his hand, but to tighten his grip on Sherlock's.
That had been the first surprise (excluding the kiss, of course). Sherlock wasn't known for instigating physical displays of affection. He wasn't known for instigating any sort of display of affection, really…
And that surprise was only the beginning.