action;
[Chekov is thinking about many, many things because that's what he does, and some of those things are concerns about the potential consequences of getting closer to Kitty. Not for himself—he really is convinced that he's indestructible—but for her. She's had an impressively bad run of luck where men are concerned and he doesn't want to add to that.
He's also thinking about how much he's missed having this kind of touch and warmth and intimacy. Lucy was over a year and a half ago and there hasn't been anyone since. Chekov is fine on his own, but he doesn't always want to be.
He pulls back to breathe. Breathing is important.]
You could stay with me in this prison, too, sometimes.