Merlin is having nightmares, uncontrollable nightmares that allow him no sleep. He finds himself only able to rest when sir Lancelot is with him. All Much to Arthur's concern.
Story based mostly in Arthur's POV
HES MARRIED HE LITERALLY JUST KISSED HIS WIFE IS MERLIN A MISTRESS NOW
for some reason when I read this my mind registered it as "thank you lancelot go away"
Why doesn't Lancelot just stick around at night? When normal people sleep.