Castle, Season 6

Beckett [in tears]:
Castle, I'm married to someone else and I have no idea where he is, we don't have any leads, and to make things worse, the venue, and now this. I mean it just feels like all of this is one big sign.

Castle:
Well, maybe it is a sign. A sign that ours is a great love story. What's a great love story without obstacles to overcome? Every fairy tale has them, terrible trials that only the worthy can transcend. But, you can't give up. That's the deal. We want the happy ending, we can't give up.

Beckett [smiling]:
And that's why I want to marry you.