Sam was reaching the end of his tether. He was trying to research and Dean's fidgeting was highly distracting. He had gone from checking his phone constantly (even though it wasn't on silent), to staring out of the window. Sam frowned and went back to his reading, he had some tricky Latin to remember. After finding himself reading the same sentence three times, Sam realised it was no use. Just knowing that Dean was fidgeting was irritating him. Lowering his book, Sam looked up to see Dean staring absent-mindedly at the door.
"You know, Cas isn't well known for coming in using the door"
Dean turned round and Sam was amused to notice that he had caught his brother off guard, and that he was blushing slightly. "I was..." Dean trailed off. Sam raised an eyebrow. "Not researching?" He suggested, looking at the book laid open on the bed, On the same page that it had been over an hour ago. Dean got the hint and picked the book up and started reading, though Sam was sure that his brother called him a dick under his breath. Grinning, Sam went back to his research.
But if Sam thought Dean was irritating him while waiting for Castiel, he knew things would be worse when the angel actually arrived. He had turned up when they were deciding where to go out to eat and had come along, even though he didn't eat. The whole time he had to put up with the long glances between his brother and the angel. The soppy look Dean kept giving Castiel was making Sam's chicken salad want to make a reappearance.
Bobby sensed Sam's irritation when he called him to double check one of the translations he had made. Sam got as far as saying that his issue was with Dean and Castiel, and Bobby snorted in a knowing way. "They need their heads banging together" One of the phones in the background started to ring. "I gotta go Sam" Bobby said before hanging up. Sighing, Sam returned his cell to his pocket.
He knew what needed to be done, but it was getting his oblivious brother and the even more oblivious angel to realise. Then do something about it. Sam frowned, he knew that he would need help but who. "Brothers really can be a pain in the ass" He said to himself. Suddenly a thought occurred to him.
"Brothers..." he said out loud, thinking the word over. And then Sam had either the best idea ever. Or the most stupid. He was definitely leaning towards stupid.