advent fic: day 3

Title: Light Up For Me
Rating: NC-17
Pairing: Merlin/Arthur
Warnings: None
Spoilers: Through 1x11
Summary: Merlin's given himself away, but by this point Arthur doesn't really have much of a choice.
A/N: Today's advent prompt is 'light'. Also this was really a rush job (again) so apologies for any typos etc

 

( Juuuuust made it in before the end of the day )