The use of the term slash to denote fanfiction that involves homosexual relationships is generally believed to have originated with Star Trek fanfiction, coming from story descriptions that contained something like "Kirk/Spock" to denote gay content in the story.

Boy, will this news get some of the Trek slash fans going! George Takei, who played Sulu in the original series, has come out in a magazine article. He decided it was finally time to do so, although one would think those who know him well already knew, especially since he's been with the same man for 18 years. Takei says he grew up with the double whammy of feeling negative about his Japanese heritage because of being interned as a child during WW2, and feeling negative about his sexual preference given the prejudices of the time. Fortunately things have changed.

It should be noted that Sulu has a canonical daughter, who appeared in the film Star Trek: Generations, so he may very well have a wife. Of course in the 23rd Century of Star Trek who knows what technologies may be used to create children by those who don't want to or can't do it in the old fashioned way.