What really?
You're Karkat fucking Vantas.
You're the team leader. You were voted in by every single one of your team members, it's your responsibility to take care of them and make sure they're happy and healthy.
Kanaya has always been there for you for pete's sake!
You're not only a romance expert, but sickle master. If anyone can solve Kanaya's problem it's you!
So get in there and help her out!
Ok fine.
Still no.
This is v much a work in progress stay tuned for more!