Flashback
"Is this some kind of sick joke?" Dean shouted upon hearing the news that his best friend, and fallen angel, was in love with his daughter.
"No Dean, it's not. I love her" Cas replied.
"You can't love her! She's my daughter for Christs sake Cas, my daughter! We've been friends for over twenty years, she wasn't even a thought in my head when we first met Cas! Can't you see how this is messed up?"
"I understand it's not exactly conventional"
"A fallen angel and a Hunters daughter- not conventional doesn't even cut it! She's twenty five, your like…ancient! Just because you don't age Cas, doesn't mean you can run away from who you are, what you were!"
"I know Dean, I know. At first, that was my argument too. But then, well, It…. Just didn't seem to matter."
"Well it matters to me. My best friend, for over twenty years, is now gonna be my son in law? How can that be right?"
"Because I love her Dean. And she loves all that matters, in the end."
"Screw this I need a drink" He replied, heading out to the living room. He poured himself a Whisky and promptly downed it, before pouring another.
"You can at least pour one for me, it'll be like our first date"
He turned, his wife was stood in the doorway. She'd no doubt try and talk him round to the situation.
"Minus the demons" he smiled, pouring her a shot and handing it to her.
"Indeed." She smiled.
"So… I guess you're here to tell me I'm being an idiot"
"Not at all. I get it. You're being protective Dad."
"But…?"
"You're also standing in the way of Celeste's happiness, which you swore never to do"
"She could be happy with someone else, someone her age"
"Is that what this is about? Or is it the fact that he's you best friend? Or the fact he was an angel?" She smiled.
"All of the above"
"You have to put all of those things aside Dean. She loves him, anyone can see that. And he loves her. We know Cas is a good guy, and he makes her happy. What more could we want for her?"
He looked at her. She was the only one who could penetrate his hunter exterior and stubbornness to pull on his heart strings. That's why he married her. He knew she was right, but it was still hard for him to admit it. He took her hand and led them back to the kitchen where Cas and Celeste were sat looking extremely pensive.
"Ok" was all he could muster right now. But it was enough. Celeste ran over and hugged him.
"Thank you" she practically whispered.
As she stepped away, Cas stepped in for the obligatory Winchester man hug.
"You hurt her, I will kill you"
"I know" Cas replied, stepping back and taking her hand.
As Cas and Celeste walked toward the garden, Dean hoped he'd made the right choice.
