dude is a pimp at 15
My thoughts exactly at first. After a second thought, that probably includes the entire time the OP was gone, which means the kid talked the girl into going to the elevator, went to the elevator and then the whole leadup to actual intercourse took that long. In that case, not so much a pimp. Still, props to the kid.
As for his parents, tell them to get a life. The kid was gonna get some shine at some point, so it might as well happen on vacation with some random that he'll never see again. No worries about lasting effects in that case.