It's that moment when he looks at you, with tears at the corners of his eyes, voice close to breaking, and his entire being trying to hide the fact that he's slowly being torn apart at the seems, that moment when he says, "Just don't be a prat".
You've been unconscious for the last three days, you've been nearly dead ever since that beast attacked. But now, as you watch his tall, dark form crumble, now is when you know you'll die. Because he might be the worst servant in the kingdom, and he might be an idiot when it comes to most everything, but he's your closest friend and most trusted ally and if he's gone what will you do?!
Then he walks out, being careful to shut the door quietly like you've asked, still trying to keep tangled emotions and something, pain, inside, and you have to hold on to your chair and dent the silver gobble in your hand to keep from running after him and just pulling him into the fiercest embrace possible, because dammit Merlin! you're the prince here and not too long ago you almost died for him and why can't he just have enough of a brain to tell you what the hell is going on!
You don't see him for the next day or so but, but when he's back it's with the usual quirky smile on his face and, "you're a prat" on his tongue, but you can see it clear as the sunlight glinting off of Brannegan's shield. He's in probably the worst pain anyone can imagine and it's now you remember that while he's an idiot, he's also incredibly strong and the only one that you will trust undisputedly.
You don't ask what's wrong. You don't ask who put him in this state. You don't even try to comfort him bend the casual hand on his back and encouraging word. You do, however lessen his work and tell Morgana to have Gwen take him out for a day to take his mind of things. It seems to work, just enough to get color back in his pale, too pale, skin, and the slightest of bounces back in his step.
It's not a perfect ending to the whole ordeal, and you feel that even if neither of you ever get over it, than at least you've crossed this bridge together, and at least when you look at him he's not being ripped apart quickly, but slowly, ever slowly, being put back together.
It's almost like magic.