That hum was really not helping to keep him grounded in the moment. But then Lucy clearly had no intention of doing anything of the sort for him. Why would she? They both knew what they wanted, how they wanted it and when. All of those answers were fairly close together in every sense of the word.

That being said when she started changing gears a little bit the effect was almost instant as he arched up against Lucy with a throaty groan as she discovered a particularly sweet spot.