No, it's not a fanfiction. And I may or may not write fanfics. Also, Karkat may seem out of character, but he's not; I just can't include all of his cussing on this site. 

 EDIT: No, Tarrid and Karkat are not related or dating. They're not moirails. Barely even friends. Just know each other. 

???: Hey, Nook-sniffer! 

Tarrid: *eyeroll* What, Karkat?

Karkat: H-Have you seen Eyulth recently? I heard he's shut himself in his room; and I'm starting to, well, worry as there have been a bunch of rumors about what could have happened to him, and-

Tarrid: Then go check, Karkat. Me and him weren't exactly happy with each other when we left that party last week.

Karkat: Oh. What happened?

Tarrid: Tons of stuff. If I remember correctly, it ended on him screaming "Shut up, you bulge-licker!" and running off. 

Karkat: Wow. What did you do, ( )eak his horns or something?

Tarrid: I don't know. I can't even remember what we argued about. Why don't we go and check on him?

Karkat: Alright, let's go then, 'bulge-licker'.

 No, this scene does not come right after the one above it. There's a large gap between them, as I'm still working out what happens between the two.

 EDIT: Be careful, there's gore in this next part. Well, I mean, it's a Homestuck story; what the heck did you expect?

 "No! Okilth, move!" Loeclo screamed as he outstreched his left arm in front of her and shoved her away from the sword that was about to slash through her chest. 

 Okilth watched in terror as the sword cut straight through his arm. Blue blood flowed out of Loe's wound like a waterfall. The culprit finally showed themself. 

 "What are you doing, Eyulth?!" Loeclo yelled, clutching desperately at his wound. "Trying to kill my worthless cousin! Why did you get in the way?!" Eyulth retorted, furious that his attempt to kill Okilth had failed; and the fact that his sword was now broken and stuck in a wall didn't help. 

 "B-Because...I'm flushed for her; she may not return my feelings, but that doesn't mean I won't protect her with everything I've got!" Tears were threatening to run down Loe's face as he said this. He tried to force them back, but they spilled out anyways.  

 Eyulth pulled out a small dagger from behind his back. He quickly slashed Loe across the face with it, loving how quickly it cut through his grey flesh.