Edwin was already gone on the sensation, eyes half-closed, expression -and mind- absolutely hazed with pleasure, that trembling in his thighs having spread upward, feeling a little as if he might shake apart completely if not for Charles' hands keeping him anchored in place.

He'd meant to actually warn Charles before he went over that edge, but the breaking point of that building pleasure all but blindsided him, stomach tightening and hips jolting up against Charles' hold as orgasm swept down his spine, leaving him shaking with the force of it.