I was looking at the Wikipedia section on Sesame Street, and I came across this:
Urban legend has it that Bert and Ernie are engaged in a homosexual relationship, as they are apparently adult human males portrayed sharing a bedroom (though with separate beds). The producers vehemently deny this, however, insisting that the characters are "merely lifeless, hand-operated puppets."
I had to laugh. This urban legend has always struck me as strange, as if straight men can't be good friends and live in the same apartment. The thing that's strangest of all about it is the fact that they're fictional characters whose only actions are what is portrayed in the fiction. Nothing in the fiction potrays anything sexual, so we shouldn't assume there's even a fact about what the fiction contains regarding their sex lives or lack thereof. Most writers will acknowledge this. According to one theory of the metaphysics of fiction, until it was acknowledged that Mulder and Scully had indeed slept with each other in the seventh season, it was actually indeterminate whether they had done so. There was no fact about whether they had. The writers in the eighth season finally retroactively made it be the case that they had. In my view it was true all along, but it was made true by something that hadn't happened yet, something the writers would later do. I still think anything that writers won't later do makes it indeterminate, and even things that they haven't done yet but will do are indeterminate as far as we know.
So there are two reasons not to assume they're gay. One is that it may not even be determinate within the fiction, so you might simply be saying something false if you assert one way or the other (or at least not true if falsity and untruth can come apart with this sort of indeterminacy). The second reason is that it's assuming something about straight men that just isn't true. Men live with other men all the time without having any sexual interaction with them, and sometimes they even sleep in the same room in different beds. In many places in the world, they might even sleep in the same bed.
Of course, I shouldn't even bring up Darren's Samwise and Bill the Pony comment, but I can't help mentioning it. What's interesting about the search that provoked that comment is that it dealt with fan fiction, which is a completely different phenomenon. Most of the time fan fiction develops the fictional world's indeterminacies and makes them determinate, sometimes leading to things the authors would never have wanted their characters to do. Sometimes it even contradicts canon in a clear way, which makes me want to think of fan fiction universes as separate fictions entirely. Of course, sometimes canon contradicts canon within a fiction, which raises interesting questions about what happens to truth in a fiction world in such cases. I'm not familiar enough with the literature on the metaphysics of fiction after just one graduate seminar on it (back in the spring of 1998) to say much more, but I thought these were questions worth thinking through a little more carefully given how often people say things like this.