Well that gasp-moan is more than encouraging. Arthur feels his chest compress, a pleasant thrill going over his skin.

At the joke, he lets out a faint, almost disbelieving laugh, which turns quickly into a smirk as the instinct to tease takes over.

"Really."

Knowing how it will feel, and hoping to knock another noise like that out of his partner, he holds him just firmly enough to feel the foreskin slide over the harder core, and waggles his dick up and down as if shaking its hand.

"A pleasure to finally make your acquaintance."