Word Count: 8k. Warnings: Age difference, underage touching and kissing.
Summary: When Arthur's neighbour, Mrs. Emrys, has to leave town for the night, she asks Arthur to look after his son Merlin whilst she's away. Arthur knows the boy has a crush on him so he tries to keep a distance, but as the night unfolds, Arthur finds that neither Merlin or him can restrain themselves.
Author's Notes: Written as a fill for the kinkme_merlinprompt described above. A million thanks to sassafrasx for offering to beta this for me and for your help and nice words, you've been awesome! :)