[ Arthur's voice shoots straight to Merlin's cock. His boyfriend is always a possessive, thorough lover but it's been a while since Merlin's seen him like this - like he really wants to be seen making his mark on his wriggling other half. He cushions his forehead on his free forearm as Arthur slides that third finger in, each push and pull of his fingers leaving him craving more - more.

And then they're gone. He takes a breath while Arthur slicks his cock before shifting again, braced with both hands, ignoring the way his cock bobs and strains for the friction of his palm. ]

Yeah ... come on ...

[ And his legs do tremble, along with the rest of him. Ever since they got tested and began fucking bare Merlin's been unable to get enough of Arthur's cock; he bites his lip, groaning soft and gut-deep at the almost too-thick slide.

Almost.

When he's fully seated he lets out a slow breath, one hand reaching back to squeeze Arthur's hip, and his muscles flutter and squeeze around him as he gives an experimental roll of his hips. ]

All yours, Arthur.

[ There's a grin in his voice. He's been with others in the past, sure, but he's never belonged the way he does with Arthur. ]

Let's make sure everyone in the cinema knows it by the time we're done.