There was the faint sound of sniffling before a series of coughing roused Dean from the lore he had been studying. A sigh escaped him as he rubbed his tired green eyes. He wasn't sure how much more he could take. He opened his emerald eyes and glared at the blank wall ahead of him.
The Angels had fallen. Castiel was now a human. Dean had the mark of bloody Cain on his arm. To make matters even worse? Cas was now sick with his first ever cold and was convinced he was dying slowly.
The first day had consisted of moderate sniffles, runny noses, and Dean doing his best to reassure the angel that being sick was human. This approach had worked - for awhile at least.
Sam had even gotten annoyed enough to go on a "vacation" with Gabriel to God knows where. Which left Dean alone with a sick angel-turned-human and more pent-up emotions than he cared to deal with.
Dean finally got up and went into the bedroom, hisbedroom, where Cas currently lay curled up on the bed. Convinced he was dying - still. He looked over with the most pitiful look Dean had ever seen in those blue eyes. Pitiful enough that Dean Winchester walked over and sat on the bed to comfort him.
Cas, who had gotten much more touchy in his sickened state, moved so he was curled against Dean with his head in his lap.
Dean started in surprise before a soft smile curled his lips. He lifted a calloused hand and ran his fingers through Cas' sweaty hair as he began to sing softly. "Hey Jude, don't make it bad. Take a sad song and make it better. Remember to let her into your heart. Then you can start to make it better..."