Hmm, I don't remember a hint of romance, unless you call Nurse Chapel's unrequited yen for Spock a romance. I do remember in the very first episode Spock's smiling in delight over a flower...but that was when Christopher Pike was still captain. But once the show was revamped on orders from NBC, Pike was gone and Kirk was in, Spock became more robot-like, and Majel Barrett was demoted from second-in-command to nurse. But yes, this current Spock is more like nine-tenths human than just half. Maybe he just doesn't want to wait for Pon Farr.