At the touch to his shoulder, Spock instantly remembered their last time together in sickbay, even their night with Jim on his birthday. It was an anchor, the go-to place to direct his attention and his movements. He glanced down to it before looking back at the other man, and his own hand slid from Leonard's elbow to his wrist, loosely wrapping around it.

"There are other things I have not fully explored, and it would be unfortunate if they were forgotten now." Testing what he would allow, Spock leaned forward and touched his lips to the side of his neck, perhaps with a little bite.