Her shivering and moans make him draw his lower lip between his teeth until he tastes blood, and he closes his eyes in an attempt to ground himself. He's letting out a moan with every thrust now, toes curling.

Eventually he realises he can't hold back any longer, and with a breathy groan he fills her, lost in bliss for the time being. Still he tries to meet her thrusts as best as he can, trying to help her reach her climax as he rides his own out, hoping to himself that she comes before he starts to feel too sensitive.