The tight heat of her, the power, it has just as much detrimental effect to his logical thinking ability as before, as it probably will every time. But beyond that, above that - touching her, burying himself within her keep, it suddenly becomes nearly imperative. The effect is electrifying, maddening... it would be frightening, perhaps, if he were not willingly given over to it.
Less speed, but more power - she names the tune, and he plays it, the fingers of one slick hand still circling her clit, and doing the same to her breasts with tongue and teeth and fingers.