The Love Machine (1971)

Robin Stone, an ambitious, sex driven TV news anchor catches the eye of Judith Austin, the wife of network executive Greg Austin. She pressures Greg into promoting him to a higher position and before long, he is running the network while Greg recovers from a massive coronary. Meanwhile, Robin dumps his model girlfriend Amanda and begins an affair with Judith. But Robin soon strays with an assortment of girls. Apart from the sexual liaisons, he's at constant odds with the network. When Greg begins to recover and wants to take back his reign, he gets considerable resistance from Robin. So Greg considers harsher methods to oust Robin from his former position and regain control of the network.