Okay here we have FLIRTATION followed by a conflict in which Spock essentially says what he said in ST:XI.
"My demonstration of concern will not change what's happened."
"If crew morale is better served by my roaming the halls weeping, I will gladly defer to your medical expertise."
Only in ST:XI he's young, and given to sarcasm. By the TOS era he's lost all patience with this kind of human demands and he's curt and to the point.