Guh, and much win for all this story! I adored everyone's characterization and reactions, and the light-hearted affectinate Gwaine POV. The sex was HOT, and with Gwaine comparing some things to his usual times with Merlin it felt like a double helping of it. In particular, every descriptions of Merlin - from body to smile, scent and taste - were very erotic. Also, as a visual person, I really must thank you for images such as:

Gwaine takes a moment just to look at Merlin’s bared cock. It looks painfully stiff, the skin tight and flushed over the head where it’s almost completely exposed, the delicate sleeve of skin just cuffing the edge. Moisture glistens in the slit,

and

Merlin covers his eyes with his forearm, the exposed thatch of his underarm hair making him seem oddly vulnerable.

Thank you for sharing this!