Sherlock pressed him against the back of the elevator, licking and nipping at John's neck, making sure to keep himself in check, not biting too hard, he wanted to just give into his pleasure, but he never could do that with a human, unless he wanted them to die, and of course he needed to keep John alive, to let him remember.

"Mmmm." He moaned when John put his hand inside his trousers. He hadn't worn pants for eons, so he still didn't in the modern times, he was wearing nothing under his trousers.