For a genius he can be really slow.
Spock is brilliant in his professional roles of teacher and star fleet science officer. It is in the personal and social relationships he has difficulty. Vulcans are not good at reading human emotions; they misunderstand the nuances. Nyota understands this. She has watched how meticulous and careful Spock is with his interactions. He tries so hard to understand, to not misinterpret and to not offend; it can be almost painful to watch. Yet others do not see it. They think he is distant and oblivious, in fact the opposite is the case, he sees everything but does not always know what it means, especially if what it means is not logical.
Nyota has patiently and slowly been building their relationship for many months now. He is senior to her in so many ways and yet in this area she is senior. She realised that she would need to take the lead because he would not trust himself to read the signs and not misinterpret events, actions and words. Nyota is very good at what she thinks of as "reading Spock"; it is her personal language major. Her studies cover many languages but learning "Spock" is her passion, she can read, interpret and understand "Spock". She is sure he wants her as much as she wants him, and that is a lot. All the signs are there, he would never say so but she can read the subtle eye and head movements, alterations in breathing, his intensity of attention and his brief touches. For the last month they have been skating around the point where they go from being good friends to a physical relationship. And for a genius he can be really slow; frustratingly slow. A month is a long time; a month can fray a girl's nerves and use up her considerable patience.
Now they are alone in his quarters. This has become a regular event. They have had a drink and some food and talked. She loves his physicality, the way he moves, the way he is graceful even when still. During the evening she has become increasing aware of him, the way his hand rests on his thigh, the way he gestures fluidly with his long fingered hands, the subtle tilt of his head, all seem increasingly erotic and she aches with longing. She has given him every hint and signal she a can think of trying to allow him to take the initative. She knows he notices but does not act. She speculates that he simply does not believe what he sees and he not trust that he is not misinterpreting her actions.
Now he has gone into the kitchen. In frustration she thinks that he will never act without a hand written invitation, possible on gold edged card. She gives up on any semblance of subtlety. For the first time she was getting angry, well, mainly frustrated (very frustrated). She looks around the room for a marker. Of course he has one on his neat desk, she grabs the plain white tray used for their snack and writes in large letters "KISS ME" on the other side she writes "NOW".
When he returns to the room Nyota steps toward him and holds up the tray his eyebrows shoot up to his hairline. He freezes; Nyota thinks he has stopped breathing he is so still. She takes a step toward him and turns the tray around. "NOW". When he still does not move she reaches up and grabs his T shirt neck and pulls, hard. He is much stronger than her. If he wanted to resist he could, but his initial immobility seems to be shock rather than reluctance, the shirt's neckline tears at the shoulder seam. Then he is bending toward her and she drops the tray at their feet as her arms go around his neck and his lips meet hers, softly at first, then, as his arms wrap around her, passionately.
Later, much later, a very relaxed satisfied Nyota finds the shirt in the bin for recycling and takes it out as a memento or, perhaps, a trophy.