Another theme is adventure. Since they are characters from a game - like world, their fanfictions usually involve them going on various adventures. They might be exploring new areas of their world or facing unknown challenges together. This adds an element of excitement to the stories.
I'm afraid I can't tell you the author of 'dark tiger a stoney calhoun novel'. It could be an indie author or a relatively unknown writer. Without more context or research, it's impossible to say for sure.
Since I don't have any prior knowledge of this 'dark tiger a stoney calhoun novel', we can only hypothesize. Maybe the 'dark tiger' represents a danger or a mystery that Stoney Calhoun has to unravel. It could be that the story delves into the character's past, and the appearance of the dark tiger is somehow related to it. The novel might also explore themes like courage, as Stoney Calhoun would likely need to be brave in the face of this dark tiger. There could be other characters in the story who either help or hinder Stoney in his journey regarding the dark tiger.
There is indeed some 'Fix It Felix and Calhoun Kiss' fanfiction out there. Some writers are really creative with their takes on these two characters. They might develop their relationship over the course of the story, building up to that special kiss moment. It could be due to a heroic act by Felix or a moment of vulnerability for Calhoun that brings them closer together in these fictional tales.
I'm not sure specifically which works Paul Calhoun has in science fiction. It could be that he is a relatively new or niche author. One way to find out would be to search in specialized science - fiction databases or libraries.
It could be about how Felix and Calhoun deal with the unexpected pregnancy. Maybe they start preparing for the new arrival, like decorating a nursery and getting baby supplies.