you should have let me sleep

But. He didn't want to turn away from it once it presented itself, either. While McCoy worried over the future-- over the chance of laughter and looking back on this moment-- perhaps with rings and mismatched furniture-- Khan's mind focused more on what their partnership meant for the moment. Khan had ruined to much to be given a white fence and it was more likely that he would be ripped away from McCoy than be by his side long enough to watch him die-- likely from the damage of drinking due to their frustrating relationship or one of his loved ones dying too young. Emotion was a heavy burden on the doctor, he knew-- he heard it in his voice and saw it in his face often. It was troubling; Khan wanted to fix the hurt he didn't cause personally... and even then, he had gone as far as to apologize. To honestly reach deep and show that he was sorry. 

A sliver of him was frustrated that the doctor wouldn't truly understand how special he was to receive treatment such as this. It scratched at him, his pride-- the need to make this human understand just what he had and almost lost due to what was certainly a tantrum but... perhaps that could come later. For the time being McCoy had earned a reward of stubborn nature, head tipping and voice curious with a hint of agitation.

"Why would I?" 

It surprised him, how offended he actually sounded. His mind reeled for a way to bury the situation-- to shove the openness of his feelings under the rug unceremoniously.