Karkat's feeling...Flushed..
It made no sense what so ever, he'd only seen the troll around once or twice...okay a few times more then often. So what if he kind of cute with his stupid insipid 3D glasses, or that the way his fangs peaked over his bottom lip was endearing. He looked like a total douche nozzle with his bifurcated bullshit shtick. Yet still you felt the odd barest feelings of red for the hacker.
Having asked around and learning the troll's name was easy enough, it was asking about him that had been difficult. From what the frustrated troll learned his name was Sollux Captor, he kept mostly to himself, was great at computers and had a thing for hacking. All stuff that just fit him, like they'd met before and this was just things he should know.
This made no sense and it pissed him off to no ends! It wasn't easy being Karkat Vantas, especially when you had a small flush crush on a troll you never even spoken to. He planned to fix that today, today he'd at least say hi to the asshole. What's the worse that could happen? When your the cancer, the answer was : everything.