Cranked Up To Intimate
[http://archiveofourown.org/works/313186/chapters/501697] - - public:opalsong
Dave realizes he has a most unfortunate crush on his best friend. This is obviously a great foundation for a black relationship with Karkat. Competitive flirting is a thing that exists, the kids try out various bits of troll culture, Dave makes consistently excellent decisions and generally has his priorities in order (no he doesn't), and there's a whole lot of talking.