Martin's hands stay pressed to the wall, and John relents with a grin, nuzzling against him for a moment. If he was physically holding Martin down, he might try to draw this out a bit more, keeping him pinned while he continued to tease him. But with Martin's own force of will being the only thing keeping his hands in place, it seems kinder to grant permission than set him up for failure.

"Whatever you need," John murmurs magnanimously, kissing two of Martin's freckles in slow succession. Then he drifts to another spot, a little more to the left — and more easily hidden — and clamps down again, drawing Martin's skin between his teeth.