The fandom with the slash ship that became canon...Merthur! God, I love them.
Here's a fic that was written for my prompt, so no wonder I love it. A misunderstood Arthur in a loving relationship with Merlin--wonderful!
Title:
Acts of ManAuthor: Wreck
Rating: Teen, PG
Word Count: 5165
Summary: On the morning of their Annual pre-Christmas Dinner, Merlin is shocked to find out that Gwen thinks his boyfriend, Arthur, isn't good enough. But after a glimpse into Merlin's quirky flat, Gwen realizes that she might not have the whole story.