A pleasant awakening and sex with a stranger after a party

The guy realized that the party at his house had gone well when he woke up in bed with some skinny naked girl... even though he seemed to remember sending all the guests home after midnight. But it was even better that way, because the girl turned out to be quite adventurous, and even though they didn't know each other's names, they had morning sex. The skinny girl jerked off the guy's boner and rode him, regretting only that she hadn't fucked him during the party.