So I remember the movie with a guy being in love with, or liking, this girl. And then toward the end, she comes by, riding on the back of a convertible with some friends, looking to be dressed for prom, and 1950s music is playing, and he realizes she is a ghost. The guy looks so sad and then she drives off.
I cannot think of it or find it anywhere and it is driving me nuts!!! Please help. I'm pretty sure it was an '80s movie.