Harry Potter fandom
Yeah, you should see the crazy stuff they come up with, including countless possibilities for gay and str8 relationship pairings. Some fanfics even reaching NC-17 levels. Cedric/Harry is tame compared to say, oh, Lucius/Harry, and dare I say someone speculated about Voldemort/Ginny... Umm.. yeah.
I take it all with a grain of salt and take it as JK writes it. There is very little romance in the HP series but some. Excluding the known married couples (parents, etc.), there's Harry/Cho, Cedric/Cho, Harry/Ginny, Bill/Fleur, Tonks/Lupin, just a few I can name right now. I don't believe a word of the speculated stuff (like Harry/Ron, etc.) until I hear it from the Horse's mouth.
Oops, I hijacked my own thread.