Wife vs. Secretary (1936)

Magazine publisher Van Stanhope is a hard-working, dynamic executive, very happily married to his beautiful wife Linda. Although their relationship is built on unconditional trust, friends caution her about the dangers of allowing Whitey, her husband's extremely sexy secretary, to continue to have access to him. Even Van's mother warns Linda that Van's father philandered during their marriage, and Van, like all men, will eventually succumb to opportunity and temptation. Although Whitey has a faithful boyfriend, she secretly harbors unrequited feelings for her boss. When they take a business trip to Havana, circumstantial evidence convinces Linda that the rumors she's heard might have a basis in fact.