Dean shaking Cas awake when he has nightmares. Dean wordlessly pulling off his sweat-stained shirt and fanning him with a wad of newspapers. Dean cutting Cas off when he tries to apologise for ruining another night. Dean gruffly wiping the tears from his cheeks and saying no more about the matter. Dean pulling Cas back up when he falls down, because no matter how shit he is at showing affection, he’s always got his angel’s back.