Hey, congrats on getting in! I'm Nabi, playing just this guy here, and would you be so kind as to tell me your plurk name again so I can add you now? :3

And yes, if no one else has cleared it up, there have been two other Feferis before you (unless I'm forgetting). The first one was from around the same canon point as yours, if I recall correctly.

Karkat here was also Eridan's moirail for a period of some months (but not anymore), so, he'll likely be wondering about how that will go with those two now. We'll see what happens!