Of course I know there are many k/s shore leave stories, but lately, watching and laughing about a DS9 episode, I was thinking about this: what if the dialogue therein would be not between O'Brien and Major Kira, but...?
As an explanation: in the DS9 episode, Kira is planning to go on leave and O'Brien shall accompany her, prompted by his wife, because Kira is pregnant with their child and might go into labour during her absence. Learning what kind of place they are travelling to, O'Brien backs out, because he was already feeling too close to Kira recently.
So, this was my idea: Kirk and Spock are planning to go on leave together, Kirk, wanting to seduce his friend, books and plans everything, and only when they are already in the hovercar that shall bring them to their destination, the following dialogue - freely interpreted from the DS9 episode - ensues:
Spock: Tell me about the place we are going to.
Kirk: Well, it's... a gorgeous, about two hundred year old cottage. Filled with antiques, sitting in the middle of a deep, dark forest.
Spock: I see.
Kirk: It has three fireplaces and two balconies.
Kirk: It's about twenty miles to the nearest neighbor, thirty miles to the nearest town.
Kirk: And there's this beautiful view...
Spock: Of what?
Kirk: Of the river. You can see it from every room in the house. At night, when the stars are out and you can only hear the rushing water, it is... one of the most romantic spots on the whole planet.
Spock: That is enough! I am not going.
I leave it to you whether he can convince Spock to come with him anyway, or not, and if Spock does, what might happen or not happen in "their" cottage, and whether this is going to be a short affair or a long, complicated and shamelessly romantic love story... :-)