Infidelity is a 1987 television film directed by David Lowell Rich, and starring Kirstie Alley and Lee Horsley.
Shortly after his departure, Ellie suffers a miscarriage. Instead of dealing with her loss, she feels scattered and disconnected, pretending that nothing has happened and she even claims that Nick should have never returned from Nepal to support her. The marriage continues to crumble, and Nick eventually commits infidelity by sleeping with Ellies best friend Eileen Laurie OBrien, the one woman who took care of him when his wife did not. To worsen the matters, Ellie changes her behavior shortly after, realizing that she was a maniac and mistreated her husband and loves him very much.When Ellie finds Nicks watch in Eileens bed, she finds out about the indiscretion. Left with a broken heart, she takes Melissa and leaves for Africa, despite Nick and Eileens attempts to assure her that their one night together meant nothing. In Africa, Ellie throws herself on her work and meanwhile raises Melissa. Six months later, Eileen is out of the picture in Nicks life, and he is still devastated by his wifes absence. Ellie, however, enjoys life and falls for the charms of French doctor Etienne Michael Carven. She accompanies him to London, where she walks into Nick and Robin at the airport. ........
Source: Wikipedia