[Were Dean truly interested in questioning whether Castiel is telling the truth, there are plenty of others who also lived through that time and would be able to confirm what he's saying.

Thankfully, Dean doesn't argue with him, and that's a nice change from how things have been lately. Either they argue or they don't speak at all. Castiel has no idea if this information will actually help the situation, but he needs to at least put it out there.]

I think because... it was painful to have to see me again, and he knew that I wasn't his version of Castiel. [Castiel can certainly relate to that feeling now, though he keeps that to himself. It's not Dean's fault, and he's never tried to push him away for it. That all came from Dean.]

Right before he disappeared, though, I found him and we spoke.

[The ocean and docks are coming into view, but Castiel suddenly stops in his tracks. He still refuses to look at Dean, and there's something distant in his eyes -- right now he's remembering, not seeing.]

He kissed me. Like it wasn't the first time. [Because it hadn't been. Dean had found something in the future only to lose it again, and so it's no real shock that he'd reacted the way he had to seeing Castiel once more.]