Being Julia (2004)

Concerned that her fading youth and beauty will being to affect her career, estranged from her only son and pretending to be ignorant of her husband's philandering, Julia is adrift in the world, searching for some way in which to regain the spark of passion. She seems to find that renewed fervor when she meets Tom, a young American admirer who also happens to be her son's best friend. Tom sweeps Julia off her feet, and the aging celebrity embarks on an illicit affair which, if discovered, would create a social scandal that could ruin her already-waning career and destroy her rocky marriage. But Julia soon discovers that her exciting new passion is but the latest facet of her life to be based upon a lie, when she learns her ardent young paramour is more interested in what she can do for his career than in her, and that his real affection is actually devoted to an ambitious young starlet. This revelation leads Julia to plot an elaborate revenge to satisfy her wounded pride and get back some of the dignity that has been gradually eroded by the various compromises she has been forced to make.