His Secretary's Secret (9 to 5)

the long version

Her boss, her boyfriend--her secret! Millionaire tycoon Matt Gramling has two golden rules for avoiding love-struck secretaries: - 1. Never employ anyone under 50! - 2. Never date a woman over 25.... Outraged, Karla Jones is determined to become Matt's new assistant, even if she has to resort to disguising herself as the staid "Jeanette"! Only, when Karla starts dating Matt outside the office as herself she knows she's playing with fire, and it's only a matter of time before Matt discovers her true identity!