Castiel had learned a lot about humanity from his observations. One thing he still couldn’t wrap his head around was the concept of romance. He had witnessed it before in a few movies and in couples he passed on the street. Why humans found it “romantic” to kiss in the rain or gaze at stars together was beyond him, sounding rather unpleasant to stand in sopping wet clothes or lay on scratchy grass to look at masses of luminescent gas.

That was, until there was you. When you started working with the Winchesters, it stirred something inside him. He thought he was getting sick but Dean explained it was “butterflies”. He tried to shake it off, that there was no possible way butterflies could’ve gotten in his stomach. But it got more complex when he found himself noticing things he hadn’t before. There were birds in the sky but he’d never stopped to watch them fly. He’d walked by rose bushes but never stopped to smell them. He’d seen music playing but never stopped to listen. There was beauty all around and he’d never seen it until you. It was like he was experiencing the world for the first time.

He’d never had the desire for physical touch either, finding it unnecessary and uncomfortable. But he even began to see that in a new light. Feeling the need to stand closeby you at all times. Your hand brushing his sent a shiver down his spine. When you sat a little too close to him in the backseat of the Impala, it was like heaven on Earth. He wanted to do something special to show his feelings, but what even were they? Could he even put a name to it? His lack of knowledge on romance was actually starting to become a problem. Doubting that Sam or Dean could help he decided to do his own research. A grand gesture might scare you off so he landed on a simple gift.

“I uh… got you something”His gravelly voice came out a bit more awkward than usual. Approaching you in the bunker library, he hands you a bouquet of flowers. Looking sheepishly to the side as you read the note attached, hopefully he was doing this right.