Castiel had always known how he felt about Dean. Somehow he’d always been able to conceal it.
Not anymore. Castiel feels like he’ll burst if he doesn’t just say it. He’s only human now, after all.
He does say it, eventually. He makes use of all the knowledge he’s acquired and tells Dean how he feels over and over again.
It’s in Danish the first time. “jeg elsker dig” he murmurs as he accepts his mug of coffee.
The second time is a few days later when they’re on a case related to an Arab painter. “أحبك,” Castiel says, not looking up from the book he’s poring over.
He ends up saying the phrase more times than he can count.
“Ez hej te dikim”
It is not always “three simple words”.
“मैं तुमसे प्यार करता हूँ”
And he never says it in the one language that matters, the one language that Dean would understand.
Castiel will only learn later that he has severely underestimated Dean. He will only learn later when, one day, Dean turns to him and says, “You know I love you too, right?”