I really do think that Stefan and Katherine should have been together in tvd. Yesterday I was thinking about how Elena was the one who made Damon embrace his humanity and I thought that the same could have happened with Stefan but backwards. Let me explain: Stefan sucked at being a vampire, we all know this, because he was a ripper and with that came the guilt, the brooding and all that stuff, and also and the most important thing he hated being a vampire. His one and only desire was to be human, that’s why he dated Elena and pretended to be a normal guy. He wanted a human girl with a human life (his words not mine) Same with Damon, he hated being human, in fact he couldn’t think of anything more miserable remember…So Damon ended up wanting to be human and embracing the human side of him thanks to Elena and just imagine how amazing it could have been if Stefan learnt to love his own nature and embrace his vampirism thanks to Katherine.
In my opinion, if this had happened Stefan would have been a much better character with a real character growth arc and it would’ve been just so fucking interesting. The love story could have worked as well as the delena relationship did.
Also, Katherine was the one who turned him so it could be so great if she was the one who teached him how to make a good vampire, how to love being one.
I also think that Stefan couldn’t love anyone right until he learnt to love himself, so…
And if they didn’t want to make nothing romantic between them, although I think it should have been, it could have been a really good friendship that improved the lives of both.