secret admirer

This 80,s film is about a girl, toni who is in love with her bestfriend, michael. One day she wrote a love letter , signed it "from your secret admirer and then placed it in Michael,s locker.Unfortunately, Michael thought it came from debbie, a girl he really likes in school,who is also a friend of toni.Then the love letter drifted from one hand to another , leaving havoc along its path.