Oh, there's no question, beginning at about 00:20 her ass muscles began involuntarily tightening & flexing and she went over the edge into a full-blown orgasm. Whether he was able to sustain his hard on long enough for her to be completely gratified is another question.
THAT IS Y IT IS CALLED 'JOY RIDE'.
UR VERY LUCKY THAT SHE IS RIDING U.