A/N: This is my first Merthur story, hope I did it justice. This story was inspired by the beginning of Tove Lo's "Queen of the Clouds" which I listen to obsessively. Also this is set sometime during Uther's reign.

"The passion, in the beginning, it's always going to be the best part of it." ~ Tove Lo

They were young and naive when it all began. There was no romantic moment that lead up to it, there was only explosive passion. Passion that was all consuming and made it so that nothing else mattered.

Merlin had been trying to convince Arthur not to go on the mission the next morning. He had a feeling that it would be dangerous and that something terrible might happen; Arthur was unwilling to listen to any of Merlin's worries.

"Merlin, it is not that simple! I know it's dangerous but I have to go for the sake of my people!" Arthur shouted. Merlin took a step toward Arthur and poked his finger into Arthur's chest as he prepared to keep arguing. Before he could say anything else Arthur pulled him close and began kissing him.

Merlin froze, his first instinct was to pull away and put as much distance between himself the prince. Instead he wrapped his arms around Arthur and kissed him back. Merlin had imagined this moment many times before, but had never thought it would actually happen, now that it was happening Merlin sought to take advantage of the moment and enjoy it as much as possible.

Arthur pushed Merlin onto the bed and then climbed on top of him, quickly resuming the kiss. Merlin's fingers were Arthur's hair as Arthur trailed kisses down his neck. He pulled Merlin's neckerchief off and trailed kisses along the exposed skin. Merlin hesitantly moved his hips upwards so they connected with Arthur's, gasping when Arthur started grinding their hips together.

"Arthur, what are you doing?" Merlin questioned as Arthur pulled off his shirt and then Merlin's. He trailed kisses down Merlin's chest.

"Even you're not that much of an idiot, Merlin," Arthur teased.

The passion was threatening to consume them, and Merlin kept trying to fight it. He thought he needed to be the voice of reason-there was no way that this was going to end well for either of them. When Arthur slipped his hand into Merlin's trousers the passion consumed them. Merlin could only hope they weren't so loud that someone came to investigate.

They fell asleep tangled in bed together, exhausted and spent. Their clothes had been unceremoniously tossed around the room, proof of how consuming the passion was. Merlin woke up early in the morning and tried to slip out of bed. Arthur tightened his hold and mumbled his name. Merlin decided he was probably safe to stay until they had to wake up.

A/N: Hope you liked it, let me know if you'd be interested to know where this story leads, otherwise it will be a lovely little oneshot. Thanks for reading!