Blissfully unaware of the other man's morbid daydreaming, Noctis responds easily to the deeper kiss, welcoming Barnabas in without hesitation.

A faint grunt escapes his throat when that strong hand pushes Rosie's legs apart again, but it meets no resistance. Barnabas may be pleased (but probably unsurprised) to find that his fingers are immediately covered in slick. For Noctis' part, the sensation is still so new and his arousal is so strong already that he can't help gasping into the kiss as Rosie's hips shift restlessly under the attention.

And it only gets better from there. Barnabas is not only good at this, but so responsive to Noctis' body language and wordless feedback that it doesn't take long for him to find the patterns and rhythms that coax increasingly urgent sounds from Noctis. The hands roaming the other king's chest slip up to grip Barnabas' shoulders hard, just to have something to steady him while the pleasure is making his back arch and his hips press eagerly into the touch.

If Barnabas was concerned that Noctis wouldn't physically enjoy himself, well, he's got nothing to worry about.