living-for-fiction:

Some people don’t believe that Dean Winchester is bi because he has never explicitly said so in the show. That’s fine. I mean, Chuck never said he’s God (throwaway lines about “my novels are real I am a god” with no claim to Christian godhood in 4.18 don’t really count, in context; rather, they support the idea that Chuck is just a prophet) either. It’s possible that Chuck is just a novelist and prophet, and his appearance in 10.05 was the product of a fanatical shapeshifter who took the form of their favorite author. It’s possible. Heck, it’s not unsupported by canon!

You know, like Dean being straight despite being heavily coded as bi. Ya know. Dean’s bisexuality is as not-canon as Chuck’s status as God. Just food for thought.