Lane flinched at the change in Spike's face as it shifted, brow ridging and teeth lengthening into sharp fangs.
He did his best not to lurch too much at the spark of pain when Spike bit down, knowing tendons and muscle were too close to those fangs to move much. The heat felt strange flowing out into Spike's hungry mouth and Lane cursed under his breath, hand pressing on his soft cock when it twitched again, much too soon.