I am after the name of a movie I saw years ago.It was about a girl who wanted a boy who was already in a relationship and she decided to drug the boys girlfriend at a school dance only the boy took the drug by mistake.He was on the school dive team and after taking the drugged drink he takes his girlfriend to the school pool to show her his new dive.However,the drug affects him&he falls so his girlfriend jumps in to help him&she hits her head&dies&he survives.The girlfriends spirit comes back and is helped by another male spirit to try&communicate to her boyfriend&friends to let them know what the other girl had done.And it works out that the male spirit helping her is the dad of one of her friends who is dying from a terminal illness&he is waiting for her when she dies.In the end the truth comes out&the girl who died her spirit goes into the girl with the terminal illness&that girls spirit joins her father.Does anyone know the title of this movie?

Dying to Live (http://www.imdb.com/title/tt0194835/)