"I guess... I was just too deep inside myself." It was about the closest to an apology that Sherlock normally got.

He leaned into the fingers in his hair. Normally he couldn't abide by anyone but himself touching the carefully coiffed curls, but John.. well, John was another story.

Sherlock eagerly returned the kiss, spreading his fingers against the back of John's head, pulling him closer even as he ducked his head down to deepen the kiss. It wasn't easy having someone 15cm shorter than you, but they seemed to make it work out alright.