They're cool. They're not best buddies, and they don't have a romantic interest. I think they're just trying to do what they've got to do, and if they have to work together, they deal with it.
Like Andie 星, 星级 (Action News) once wisely said, 爱情 changes us — and though Damon has faltered and made terrible mistakes as he finds his way, he is now making choices that don’t just further his own selfish interests, as Katherine and Klaus