[Gasps out a loud moan at that, momentarily distracted with just rocking into his mouth, free hand reaching down to cup his jaw and tilt it up so he can stroke down harder into his mouth]
Fuck. [Takes a moment, but then ducks his head, licking down the length of his cock, too, from tip and working his way down to the base, sucking and licking gently as he starts stroking harder into him, pulling back enough to slide in a third finger]