Lily in Love (1984)

Broadway star Fitzroy Wynn (Christopher Plummer) is thrilled when his wife Lily (Dame Maggie Smith) writes a new script with a brilliant lead role. While egocentric Fitz thinks himself perfect for the role, Lily dashes his hopes when she admits she wants to find someone different for the part. Fitz refuses to give up his pursuit. Enlisting the reluctant help of his agent, Fitz poses as Roberto Terranova, a young Italian actor and the exact model of what Lily wants for the role. But trouble arises when Lily appears to be falling for the charming Italian, and Fitz is left to wonder just how serious she was about finding someone different.