I read a fic once like this but this is more of me looking for any type of fic like this...
Dean has either go off on his own or maybe had a falling out with the family. He could be gone for a few years or even longer, and when he comes back for maybe a wedding (Sam's or anyones) or a reunion or emergency, etc, he brings back Cas with him and everyone is kind of in shock. Whether because they didn't know he was gay, or because of how differently he acts, or something like that.
This could either be an AU or a canon story. But I want a returning Dean, who's not happier per say...I don't know...but who comes back. It could be without Cas, or maybe he left everyone including Cas, anything like that. I know I read something like this a while ago but I wouldn't remember where- I just like this idea.
Thank you in advance if someone actually finds something like this! I'm gonna go off and search more!

-Oh, or any John meets Castiel fics and is sort of an ass, which makes both Dean and Cas angry