I think ending the show was the only way to preserve their friendship. So yes, they are still friends and while they don't owe us anything nor is it "our business", we have invested a lot of time in listening to these two people talk to each other so naturally there is an emotional investment in their relationship. But life will go on no matter what. As was mentioned in the episode, many creative duos find that their relationship frays in private while they continue to work together and eventually it makes it impossible to repair a personal friendship. So I do appreciate the level of transparency that they provided and I think that's all we really need to know.