Stirred desire still thrummed through Spock's blood but Jim's arm on around her shoulder was soothing, human-cool and sufficiently descriptive, visually speaking, of an appropriate human gesture indicating partership.

It was not jealousy. It was the lingering desire to possess.

Which also motivated Spock to place kisses along the side of Jim's neck.

"It would be advisable for the medical thing, as Jim has dubbed it, to include a sufficient span of time to include a period of reacquaintance."

It was a dry and perfectly formal request to ensure they had enough time to have sex.