the way that erikar happens is like this
he hits on everyone cause he's eridan but then karkat actually responds to him and doesn't threaten him with a knitting needle like a certain electric violinist
so then eridan starts trying to talk to kk more and kk accepts his number without thinking about it because while eridan is all SO SUPER EXCITED HIS FAVORITE DRUMMER'S TALKIN TO HIIM AND ALL
karkat just has this rule to be nice to the fans because no one else really does it (maybe john but hell if egbert is gonna represent the band alone) so he's always nice to people and this fish troll always catches him right after a set when he's super tired and docile. so he just kind of nods along and doesn't really pay attention much until the kid hands him his number and
oh this is like. not a fan thing. it's a romance thing? or groupies???