Nicole Kidman and Zac Efron get hot and heavy in the new trailer for their upcoming rom-com, A Family Affair. The Netflix movie follows Zara (Joey King), a person assistant to self-absorbed Hollywood star (Efron), after she finds out her boss has been secretly dating her widowed mom (Kidman). In one scene, the High School Musical lead, 36, rips off the 56-year-old Oscar winner’s shirt as they kiss on a bed, while another clip shows them locking lips against a wall. Things aren’t just physical, as they also can be seen dressed up for a dinner date and dancing on the beach — though King’s charac…