There are some people on this board that are either clueless or malicious.
She wants to talk, so that means his foot is still in the door? My god! No, ADULTS deal with these things by talking about them. The person who said that is clueless or egging him on to be super embarrased.
All of you who seriously think that she's going to do anything other then tell him he had a crush and that it's no appropriate and that he needs to find another instructor, y'all are out of your minds.
I know it didn't end well, I just want to hear the specifics of how badly 'didn't end well' means this time.